Resolved Removing Ad Ware

I've searched this site and can find nothing like this. Somehow a Adware
program (Antivirus Scan by Marezer.com in the UK)has gotten into my
install of Win 7 Ult. I can't do anything while in windows. When I try
to open a file, folder , Icon or anything, a Pop up appears telling me the
file is infected and then transfers me to the UK so I can buy their
software. I've had infections in the past and was able to get into the current install of Windows but not this D*** thing.
Anyone ???
TIA