HELP~Firefox, Thunderbird and IE Cant find a connection but limewire can!!~HELP?

After a system restore I found that Firefox, Thunderbird and IE can't find a connection on my computer but limewire can.

I am running windows XP sp2. I have tried uninstalling and reinstalling but it didn't work!

If there is any programs which could help with solving this please tell me!

Thank you very very much,

John

HELP~Firefox, Thunderbird and IE Cant find a connection but limewire can!!~HELP?microsoft net framework

reinstall firefox,

there was a new update today