I think my computer's infected. Please help.?

OK, my friend sent me a link in AIM that I should have tooken my first instinct on by not clicking on it, and it's been causing problems. I am running Windows 2000 SP4. The problems:

1. I have a ''Mirar Toolbar'' and a toolbar that just says ''Search'' installed on my computer. I have already tried to go in and remove the program, but it tells me I don't have the prilveliges to do it. I'm the only one who uses this computer.

2. It continues to pop up with different websites offering me stuff that I don't need. It's like whenever I type in any web address, something pops up and bothers me. I have already tried raising my cookie level and that doesn't seem to work.

3. My Norton AntiVirus and Grisoft's AVG Free continues to pop and tell me that I have a trojan horses on my computer. I have went in and had each one go and delete it for me. But every time I log off, they seem to reappear. I have went in and tried to delete it manually but that has to no prevail either. What to do now?

I think my computer's infected. Please help.?firewall

u can get rid of this with adware-se or u can try spybot search %26 destroy or spyware doctor thats how I got rid of my u can download them here after installing all of this go into safe mode my restarting windows and while its booting press F8 and then in safe mode run the scans.