Telnet/SSH Connection to Switch

Question

I'm studying for the CCENT, and I have one issue and two general inquiries I'd like to present.  
First of all, I'm having trouble connecting to my 2950 using Telnet/SSH, though I've applied a VTY password.  As an aside, I'm able to connect through the console.  I applied an IP address to the switch, and I'm wondering if there's a part of the process that I've missed.  When using Putty to connect to the IP, I immediately receive the "Network Error: Connection refused" error; the same basic message happens, using Tera Term.  
Here's my running config:
Switch#show running-config
Building configuration...
Current configuration : 2416 bytes
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
hostname Switch
no logging console
username CCNA password 0 CCIE
ip subnet-zero
ip domain-name modeofinquiry.com
ip ssh time-out 120
ip ssh authentication-retries 3
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
interface FastEthernet0/1
 switchport mode access
interface FastEthernet0/2
 switchport mode access
interface FastEthernet0/24
 switchport access vlan 2
 switchport mode access
interface FastEthernet0/25
interface FastEthernet0/26
interface Vlan1
 no ip address
 no ip route-cache
 shutdown
interface Vlan2
 ip address 192.168.1.107 255.255.255.0
 no ip route-cache
ip default-gateway 192.168.1.1
ip http server
line con 0
 exec-timeout 0 0
 password CCENT
 logging synchronous
 login
line vty 0 4
 login local
 transport input telnet ssh
line vty 5 15
 login local
 transport input telnet ssh
end
 --More--
The physical connection I'm using is from my desktop's second NIC, and I've configured the IPv4 connection to the switch's listed IP, which is 192.168.1.107.  Is there anything listed above that would be problematic?
One of my questions has to do with the IP address that's supposed to be used to receive rsa keys: why is it necessary?  Also, I tried entering the "ip address dhcp" command to grab an address from my WRT54G and received the following:
Switch#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)#int vlan2
Switch(config-if)#ip address dhcp
                             ^
% Invalid input detected at '^' marker.
I'm following the directions in Odom's book, and I don't see what I'm missing.  
My other question has to do with passwords, in general.  Entering the username/password on either the interface-subcommand or the global configuration area seems unimportant, here:
Switch#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)#line vty 0 15
Switch(config-line)#login local
Switch(config-line)#transport input ssh telnet
Switch(config-line)#username DDDD password EEEE
Switch(config)#^Z
...and...
Switch#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)#line vty 0 15
Switch(config-line)#login local
Switch(config-line)#transport input ssh telnet
Switch(config-line)#exit
Switch(config)#username FFFF password GGGG
Switch(config)#^Z
Here's the running config, afterwards:
Switch#show running-config
Building configuration...
Current configuration : 2535 bytes
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
hostname Switch
no logging console
username CCNA password 0 CCIE
username BBBB password 0 CCCC
username DDDD password 0 EEEE
username FFFF password 0 GGGG
ip subnet-zero
ip domain-name modeofinquiry.com
ip ssh time-out 120
ip ssh authentication-retries 3
 --More--
It doesn't appear as though exiting out of config-if mode made any difference for the usernames/passwords.  Then again, I can't connect through Telnet/SSH, so I'm not able to test it, at the moment.  
I'm really sorry for the huge post, but I didn't want to start multiple threads.  Any help is much appreciated.
- B 

Answer 1

First of all, thank you all for the helpful responses!
My PC is currently connected through the router, from which a straight-through cable is connected to port Fa0/18, and it is indeed on vlan2, which is associated with 1.107.  
I ran the arp -a command, and here's a portion of it:
Interface: 192.168.1.105 --- 0xc
  Internet Address      Physical Address      Type
  192.168.1.1           00-0c-41-d4-6d-a1     dynamic
  192.168.1.104         64-a3-cb-3d-07-64     dynamic
  192.168.1.107         00-0a-b7-13-e5-c0     dynamic
1.105 is one of the NICs on the desktop.  The BIA listed for 1.107 is one of the static "CPU" addresses on the switch.  Here's my current running config:
Switch#show running-config
Building configuration...
Current configuration : 2434 bytes
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
hostname Switch
no logging console
username CCNA password 0 CCIE
ip subnet-zero
ip domain-name modeofinquiry.com
ip ssh time-out 120
ip ssh authentication-retries 3
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
interface FastEthernet0/1
 switchport mode access
interface FastEthernet0/2
 switchport mode access
interface FastEthernet0/18
 switchport access vlan 2
 switchport mode access
interface FastEthernet0/19
 switchport access vlan 2
 switchport mode access
interface FastEthernet0/20
 switchport access vlan 2
 switchport mode access
interface FastEthernet0/21
 switchport access vlan 2
 switchport mode access
interface FastEthernet0/22
 switchport access vlan 2
 switchport mode access
interface FastEthernet0/23
 switchport access vlan 2
 switchport mode access
interface FastEthernet0/24
 switchport access vlan 2
 switchport mode access
interface FastEthernet0/25
interface FastEthernet0/26
interface Vlan1
 no ip address
 no ip route-cache
 shutdown
interface Vlan2
 ip address 192.168.1.107 255.255.255.0
 no ip route-cache
ip default-gateway 192.168.1.1
ip http server
line con 0
 exec-timeout 0 0
 password CCENT
 logging synchronous
 login
line vty 0 4
 password NICE
 login
 transport input telnet ssh
line vty 5 15
 password NICE
 login
 transport input telnet ssh
end
As you can see, I've added the VTY passwords, though I thought I had already done that.  Actually, to what do the "CCNA" and "CCIE" passwords listed above apply?  I'm assuming those are the local login credentials I added for the VTY lines.  
I just got through disconnected the switch's straight-through cable from the router and connected it directly to my desktop's second NIC again, and I still can't connect, remotely.  Where should the troubleshooting start, at this point?