Internet Problem

[Venomous]

Ok so i hopped on the computer this afternoon, to see msn not working, hmm i think, Fiddle around, try running msn 7.0 which i also have installed, but 7.5 wont work. So i uninstall, reinstall nothing works. Hmm i think, go to check my emails in hotmail, wont load up, then try some sites, and some wont work, aka ebay, while others work fine. Ive turned my adsl modem off, turned it back on, checked all the settings. Just wont work. And im really annoyed : Done a virus/adware/spyware scan, nothing there. And i donno what to do? Can Anyone help please?

Cheers Shane