I researched the internet to find something to make my computer faster. It used to be very fast but recently it has slowed to dial-up speed. The only one I found that has a money back guarantee was RegZooka. I purchased it because I figured if it didn't work I could get my money back. I tried to contact them several times for some help but no reply. I don't know if it works. It didn't work for me. In fact after I downloaded the program, scanned, and clicked fix. It seems to run even slower. I thought maybe I did something wrong so I tried to contact them and not a single reply.