I can't get my pad to work correctly in SM5

Today I decided to make a pad SM setup. I hooked up my cobalt flux to my pc via a ps2 to usb converter and SM recognized the pad as a PS3 controller. I assumed it was working until I tried binding the controllers buttons. As soon as I hit a button to bind it was instantly filled in without me pressing anything. This struck me as odd so I went to the input test screen and saw this.



You can't really tell from the screenshot, but I think around four buttons were constantly being held down while another few flickered on and off extremely fast. The pad works fine with DDR II so I have no clue whats going on here.

Pad: Cobalt Flux
Converter: Pelican PS2 to PS3 Adapter (PL-6338)

Any help with this would be greatly appreciated.

This might work, this video shows for guitar hero's guitars but should work on the mat
http://www.youtube.com/watch?v=pOfgJ5S_Az8

Thanks, using xpadder I was able to bind all the arrows. There's still one problem though, when I hold down an arrow it doesn't stay held but instead seems to "flicker" on and off. Pretty much makes comboing impossible.

Try to bind them to different ones, i use to play with a ps2 controller and that never happen to me.

I tried binding to a few different keys but I still had that strange flickering arrow issue. Later I tried messing around with xpadder but I'm not exactly familiar with it.

Any ideas?

All I can say is get a new adapter or look for other binding tools. I haven't use my Pc in forever because its slow. If I find a another binding tool I will tell you. Till then, try Google.com