My computer has been infected by trojan?? Please help!! How do I fix this?

When I open the internet, a pop-up says "Your computer was infected by trojan. It's dangerous for your computer, some files can be lost! Click OK to download the antispyware program to clean your system! (Recommended)"

If I press OK it just opens another page with another pop-up. If I click cancel, then it goes to my regular homepage... How do I get rid of this?? Is my computer messed up now?

My computer has been infected by trojan?? Please help!! How do I fix this?ktm

It sounds like you have a SmitFraud infection. I suggest you install Ad Aware Free Edition or AVG Anti-Spyware on your computer and run a complete system scan using the program. You can download them for free at CNET's download.com. The website below should give you some background information about the infection.

My computer has been infected by trojan?? Please help!! How do I fix this?nortan

Well, you seem to be infected. Here are some links to downloads that may clean it up for you.

http://www.download.com/Spybot-Search-De...

http://www.download.com/Ad-Aware-2007/30...

http://www.download.com/Spyware-Doctor-S...

http://www.download.com/A-Squared/3000-2...

http://www.download.com/Avast-Home-Editi...

I sincerely hope these help!
dont download and software that comes knocking you never know it could be worse than the currents onejust an antivirus and scan your machine
This is a Pop up asking you to download this software but this software is actually a Malware.