N64 controller for PC mod

Hey guys!
I have N64 on my computer and want to play with a controller.
I have a PS3 controller, can I just use that and if so how do I do that?
OR do I need a N64 controller and mod it to play, and how do I do that?

There’s N64>USB converters somewhere on the internets. I have one and it works pretty good.

http://www.retrousb.com/product_info.php?cPath=21&products_id=82

That’s the one I use it works great

You can use a ps3 controller on a pc with motionjoy software. http://www.motioninjoy.com/