Page 1 of Strange PC problem, need some help!

My PC has suddenly strted doing this for no reason that I can gather: when I click on the shortcut to connect my broadband connection, absolutely nothing happens. No error message or nothing. Just completely dead. So, I open my Outlook and click on send&recieve, I then get a message to say "cannot find that connection in phonebook". I re-steup my braodband connection, creating a new shortcut and all is well again. Then, I turn on my PC today and its back to where it was yesterday with the dead link and "cannot find...etc.".

Is this the result of some virus or worm I haven`t heard about? Any advice?

I`m running XP on a P4 2.6.