I have a virus thats changed my desktop and asks me to purchase anti-virus

Hi. First let me say sorry for taking your time for my stupid mistake, which i now know is my fault after reading up on spyware and trojans.

A box popped up and asked me to scan my computer, me thinking i was doing the right thing clicked it!

What it has done is download something to my computer. Changed my desktop to a background saying i have spyware, to click the link to remove it

The site it takes me to is

http://deuscleaneronline.com

I have done an AD-Aware scan, and it found 2 viruses

stfngdvw.dll
ddcDUmNf.dll

I am now doing scans with spybot, and some online scanners from this site.

I have downloaded on my computer already Avast, i have also read that im only ment to have one Anti-Virus, so wont download more of them.

Thanks for your time and help, i await your reply.

 

Also, i keep getting sent to this site

http://antispyware-reviews.biz/?wmid=4663&pwebmid=R3n1c2Bg8A

 

run smithfraudfix

http://www.afterdawn.com/software/desktop_software/desktop_security/smitfraudfix.cfm