Well I found an interesting item at a pc shop,a USB psx/ps2 gamepad port.All you have to do is jus hook up ur psx/ps2 gamepad into the adapter then hook-up to the pc.I test it & it works,haven't try the vibration mode yet.The usb brand is Rockfire.Not a bad gadget to have for the emu fans.Here the web,look under accesssories for PX-205
http://www.rockfire.com.tw/duh, I bought one of those like, 4 years ago? :p