Internet works, however IE 7 and yahoo messenger dont work. HELP!!!?

My internet connection is working and i know this because i am able to download and upload files on Limewire and Shareeza however internet explorer wont work and either will yahoo messenger.

i was using the internet when the connection appeared to get really slow so i restarted my Internet connection and then IE7 and yahoo messenger would no longer work however i know for sure im getting a good internet connection due to the fact i can still download and upload files from limewire and shareeza.

i already attempted a system restore to no avail and i also attempted to disable all IE7 add ons and still nothing.

i ran all anti-virus, adware, and spyware programs i have (To check if something was in my computer screwing it up) and i EVEN ran those applications in safe mode...no nothing...everything is fine.

i havent downloaded any new software recently so how would i fix this.

please help its very important to run my small record label.

thank you very much.

Internet works, however IE 7 and yahoo messenger dont work. HELP!!!?windows xp home

1. start run (type in) temp Delete all files here

2 start run (type in) %temp % Delete all files here

3.start run (type in) Prefetch Delete all files here

Internet works, however IE 7 and yahoo messenger dont work. HELP!!!?microsoft visual studio internet explorer

Try to reset Internet Explorer settings, you return it to the state it was in when it was first installed on your computer. This is useful for troubleshooting problems that might be caused by settings that were changed after installation. When you restore Internet Explorer's default settings, some webpages that rely on previously stored cookies, form data, passwords, or previously installed browser add-ons might not work correctly.

If not, install ie6.. got same problem before and i found out that its because of my antivirus. I used norton before.