How to use Dualshock 3 as a pcsx2 controller

[Shouvanik]

how can i use ds3 to play games using pcsx2? Is the method safe or will it damage my pc or ds3?
i heard that ds3's L2 and R2 are analog triggers instead of ds2's pressure sensative buttons. will that make a differece in gameplay?
my specs
intel i5 3570 3.4-3.8 ghz
nvidia geforce gtx 660 2gb gddr5
windows 7, 64 bit

[NarooN]

Use Scarlett's driver.