Vista - Only IE x64 works not Firefox or IE 32

Hey Firefox or IE 32 bit does not work, it wont connect to the internet, neither will AIM. However I can go on websites with IE x64 bit version. BUt I cant go to youtube and such because flash doesnt work with the 64 bit version.
Any help would be appreiciated.

My orignal post was a little unclear-heres an update


1. I have my main computer (the one with the problems) thats a custom built vista x64 home edition, it has a IE 32 bit and a IE 64 bit. After I downloaded sp1 yesterday (3-18) firefox and IE 32 stopped working along with AIM and Azuerus. Firefox just brings up a blank white screen, while IE 32 brings up the cannot connect screen, however IE 64 works fine (alas no flash support)
2. Only IE 32 says I'm disconnected the Internet, Firefox is blank.
3. In the control panel it says that I am connect to the Internet.
4. the Internet worked fine yesterday morning before the sp1 install.
5. I have Mcafee anti-virus
6. When was the last anti-virus scan performed? Not sure maybe last week.
7. What should I be looking for the log?
8. I do not use windows firewall
9. I do use Mcafee firewall, but it is turned off.

Get to your error log by,

Left Click on Start Menu.
Right click on Computer and choose manage.
Click on the event viewer.
You now have loads of options to try and pin down what is happening.
Expand the error tab.
Look for things in the last 24 hours.

Anything specific I should be looking for in the Log? I found some people who had similar problems, they solved it by turning off a motherboard firewall. I have my McAffe and windows firewall turned off.
Also my PC wont shut down, it just stays on the "shutting down" screen and I always end up turning it off manually.

Look for error in the last 24 hours.
Uninstall Mcaffe.
Look in your performance and reliability logs (this will list all errors), very good for diagnostics.