A couple of KBM questions

[ChrisRX]

So keyboardmania controllers are pretty rare and therefore pretty expensive (especially importing to the uk) so I've got a couple of questions.

I hear it's possible to use a usb keyboard (typing style not music style) as a controller is this true?
If so does it work on both mixes of the game? I hear only 2nd/3rd works with usb
Also has anyone ever made a homemade kbm controllers. Possibly by taking a usb typing keyboard and a cheap music keyboard and connecting the music keyboards contacts to the typing keyboards
Are there any cheap alternatives to the official controller, such as any 3rd party keyboards

[_bloop]

I'm almost sure that a USB typing keyboard wont work with the PS2 mixes, I haven't tried it myself. And the Yamaha one only works with KBM II, only the official keyboard works with the first game.