Cannot connect to Itunes Store-nothing is working. Please Help

Question

This is my diagnostics report
Microsoft Windows XP Home Edition Service Pack 3 (Build 2600)
Dell Computer Corporation Dimension 3000
iTunes 9.0.3.15
QuickTime 7.6.5
FairPlay 1.6.16
Apple Application Support 1.1.0
iPod Updater Library 9.0d11
CD Driver 2.2.0.1
CD Driver DLL 2.1.1.1
Apple Mobile Device 2.6.0.32
Apple Mobile Device Driver 1.45.0.0
Bonjour 1.0.6.2 (118.5)
iTunes Serial Number C4370845D7BD2992
Current user is an administrator.
The current local date and time is 2010-02-05 19:21:47.
iTunes is not running in safe mode.
Video Display Information
Intel(R) 82865G Graphics Controller
** External Plug-ins Information **
No external plug-ins installed.
iPodService 9.0.3.15 is currently running.
iTunesHelper 9.0.3.15 is currently running.
Apple Mobile Device service 2.50.39.0 is currently running.
** Network Connectivity Tests **
Network Adapter Information
Adapter Name: {CF77AEC6-9D69-418A-BB7D-9ADB5C1789E6}
Description: Intel(R) PRO/100 VE Network Connection - Packet Scheduler Miniport
IP Address: 192.168.1.5
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.1.1
DHCP Enabled: Yes
DHCP Server: 192.168.1.1
Lease Obtained: Fri Feb 05 09:55:00 2010
Lease Expires: Sat Feb 06 09:55:00 2010
DNS Servers: 192.168.1.1
192.168.1.1
Active Connection: LAN Connection
Connected: Yes
Online: Yes
Using Modem: No
Using LAN: Yes
Using Proxy: No
SSL 3.0 Support: Enabled
TLS 1.0 Support: Enabled
Firewall Information
Windows Firewall is on.
iTunes is enabled in Windows Firewall.
Connection attempt to Apple web site was unsuccessful.
The network connection could not be established.
Connection attempt to iTunes Store was unsuccessful.
The network connection could not be established.
Secure connection attempt to iTunes Store was unsuccessful.
The network connection could not be established.
Secure connection attempt to iPhone activation server unsuccessful.
The network connection could not be established.
Last successful store access was 2010-01-26 23:13:13.

Answer 1

If you are absolutely certain you have no security software installed on your computer try the following:
REMINDER:Please make sure ITUNES is closed when you make changes to firewall settings.
*Windows 7 Users*
1. Goto Start
2. Type "Services.msc"
3. Locate and open *Windows Firewall*
4. Select Stop
*Windows XP*
1. Goto Start
2. Select Run
3. Type "Services.msc"
4. Locate and open *Windows Firewall*
5. Click Stop
Open Itunes and run the diagnostics again.
Good Luck