Help Needed! - BM controller to USB adapter problems

[Xiphion]

I finally got my psx/ps2 controller to usb adapter in the mail today called Super Dual Box Advance. Works great with my PSX and PS2 controllers. But when i use it with my beatmania controller, something weird happens.

When I hold down any the keys, my PC registers it as several key presses. this isnt the case with my ordinary PSX/PS2 controllers. This makes it impossible to play any of my BM simulators.

Im really saddened by my situation; I hope my money hasn't gone to waste and that there is some kind of fix for this. I've tried several different drivers, but with no luck. I've tried searching, but was unable to find a direct answer. ANY help would be greatly appreciated!

In game controllers, it is called twin usb joystick, if that helps any. Even when I try using joy2key, it still rapid-fires whatever key I assign it. I've even tried looking for some kind of program that disables autorepeat keystrokes, but no luck. I don't know what else to do.

Oh, and I've been trying for hours now trying to get this thread up because the website has been acting funny. The only place that can help me the day I get my adapter is down lol... Just my luck =P