Security Tools Mal-ware Removal Help?

So, yesterday, when i turned on my computer, i found this thing called Security Tools. Because it’s obviously not real, i decided to see if i could remove it via the control panel->add/remove programs. It wasn’t there so then i tried initiated AVG Free. It didn’t run so i googled it. Found out that it’s a Mal-ware/virus/etc.

anyways, I’ve tried installing Malwarebytes’ Anti-Malware and i don’t seem to have the mbam.exe file. other Google results yielded websites that recommend Spyware Doctor. Overcome with hope, i installed it, scanned my computer, and then found out that it can’t remove threats unless i buy a registered version of it.

oh, and i have a process explorer thing to kill the Security Tools process. Please and thank you for helping.
*edit*
Also, i prefer not having to reformat my entire computer

Try system restore, if you do not want spyware doctor and malwarebytes fail.
Also, you can try downloading spyware doctor from http://pack.google.com – there is a free version of it.

My HP Pavilion dv2000 and MacBook