I'm very happy that the software worked for you. I just have a nagging suspicion about it, and there are some negative posts around the internet about it.
Try doing a google search on winantivirus. In fact, just click this link.
I'm not saying "don't use that software", but do exercise the normal caution that you should whenever considering adding something to your PC.
In the words of one reviewer (which you can find through that Google search), "Industry experts have never tested WinAnti-Virus Pro, and they haven't received any awards. We don't recommend this product."
Just be careful.