I used to use DS3 Tool but got sick of having to keep enabling the controller every time I started my PC up, so I found a MUCH better and easier alternative: http://www.neogaf.com/forum/showpost...&postcount=102

After following this guide all you'll have to do is simply connect your PS3 controller via USB and that's it, you're good to go and play whatever games you want without any settings to configure or anything else