most use the CH non-pro pedals (some, like me, wired them to their LWFF
:-) - you find a description under:
http://www.chproducts.com/pcgear/chpedal.shtml
there is also a pro version and a pro with USB:
http://www.chproducts.com/pcgear/propedal.shtml
http://www.chproducts.com/usb/proped-usb.html
but IMHO the non-pro is the best choice for racing simulations.
Lio
http://www.chproducts.com/index.html
Ask, and ye shall receive.