hey, i just figured it out!
for some reason, when i went into my "user accounts", there was another account named ASP.NET, which i have no idea what it is....but somehow placed itself in my system...i quickly deleted it, and now i can log in normally.
must've been some spyware program...
for preventive measures, people should double check their "user accounts" info and make sure there aren't any things that shouldn't be there....
some reason my spybot & ad-aware didn't recognise it. oh well.
but, thanks anyway.
\"I am not young enough to know everything.\" - Oscar Wilde