Vista - I Tunes and other errors

Right first i had itunes that would not access my store so i could not buy anything also IE7 would not log onto a secure server, also slow download speeds and windows updates often failed, all forms of drivers failed to install with the message file corrupted.
it all came down to the drivers windows had installed for my network driver!! i downloaded at work the nforce 4 drivers for my board and installed them on my machine and most of my problems went away, so if you have any of the above problems it might be worth trying