Computer help

[Keiter]

I am in this fantasy golf league on yahoo and this group called the ja-team for the past 3 years have been able to get into the group I'm in through my computer and have caused problems there and got me kicked out. So I went to this bullguard website and downloaded a virus scanner thing and it said there was 190 viruses on my computer. I got that number down to 27 right now because it keeps saying that bullguard couldn't remove all the viruses after 15 tries. So this morning I went to the yahoo fantasy sports website and I went to log-in and it said the password was invalid. So I tried it several times and had the same problem. So I went to the forgot password page and entered my information and they gave me a new password. Then I entered the new password in and instead of saying invalid password it just takes me back to the sign-up page and acts like I didn't even enter any information. The weird part is when I go to any other part of the yahoo website except for the fantasy sports, I'm logged in. Do you know why this is happening? I'm trying to get rid of every virus so I can get back in my group and not have this stupid ja-team break into my computer and be able to see every website and message board I visit.