Please check this link out.
http://www.bleepingcomputer.com/forums/How_to_remove_SpySheriff_Winstallexe_Spysheriffexe-t22402.html
My desktop computer has been infected with spywares recently, and I have tried free softwares like Adware and Microsoft's AntiSpyware Beta to clean my machine. Apparently, I was not able to clean my desktop completely. I do see a blackbox warning on my desktop reading '' your computer has been infected with spywares'' every time I open the computer. I have also noted that the machine has been awfully slow.
What should I do now? I am bit reluctant to buy commercial spyware products for anumber of reasons. I am also wondering if I should try some sort of system restore to clean all the spywares.
I am new to this forum. So any help would be hugely appreciated.

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