Solution for Windows 7 can not connect to Time Capsule Guest network

Question

Problem: Sony Vaio running Windows 7 (64bit) will not connect to my Time Capsule Guest network
For added security, I set up a guest network at home. My friend brought over a Vaio and was unable to get an internet connection via my Guest network. The Vaio connected to the Time Capsule with no problem, with full bars, but was not able to get on the internet.
After way too many hours going through useless online suggestions and even calling Apple tech support to see if there might be a known compatibility issue (where I was told they had no idea and I should call Mr Softy) I discovered that the Vaio had somehow set itself to use the DNS Server address of the Time Capsule, main network, not the guest network. (ie Main network uses 10.1...., Guest uses 172.1....) so once I set the Vaio to Obtain DNS server address automatically it fixed the problem and connected to the internet via the Guest network.
Detailed solution:
Configure Time Capsule Guest as follows:
Network Name: fill in the blank
Allow Guest Network to communicate: left unchecked
Guest Network Security: WPA/WPA2 Personal
Password: fill in the blank
Configure Vaio:
Set up new connection from the Network and Sharing center using the name given to Guest network
(for password chose WPA2-Personal>AES>then your Guest Password)
Select Manage wireless networks from left column in main Network and Sharing center window
Select Adapter Properties
Click on Internet Protocol Version 4 (TCP/IPv4) to highlight it, and Select Properties
Make sure both Obtain an IP address automatically and Obtain DNS server address automatically are selected then OK & go back to Network and Sharing center
Connection is active.
Hope this helps those condemned to playing system admin for their windows brethren

Answer 1

Great post!
Here are a couple of more methods to add to your bag of tricks:
Method #1: Use Win7's built-in diagnostics to remedy network maladies
• Start > Start Search > type in: ncpa.cpl <Enter>
• Select current active connection.
• Click Diagnose this connection
• Select Reset the network adapter
Method #2: Use the ipconfig tool to renew the DHCP-provided IP address information
• Start, then click Run, and then, type: cmd, and then, press <enter>
• At the prompt, enter the following commands; press <enter> after entering each one:
ipconfig /release
ipconfig /renew