As the tital says, can you use a playstation 2 to usb adaptor and play simulators with a playstation 2 beatmania controller?
Are their simulators that this would/n't be possible?
If its any help a ps3 controller works. PM me and ill send you the files to get it working with a lil read me to guide you along.
As said above, you need it to register as a joystick. Plug it (im using windows xp btw) then go to control panel---> Printers and other hardware--->Game Controllers
It should show up in the menu there. If it does, click properties and then press a button and see if a little icon lights up to indicate that you have pressed the button. Try google for a driver.