Probably not gonna fly on this one.
Try this: http://www.amazon.com/gp/product/B000YMQGWU?refRID=R0CKNCAB6SP7Y6P736D4&ref_=pd_cart_vw_1_4_p
This one is only $4.85 and got pretty good reviews off of Amazon.
http://www.amazon.com/gp/product/B000YMQGWU?refRID=R0CKNCAB6SP7Y6P736D4&ref_=pd_cart_vw_1_4_p
This is the adapter I bought.
The pad was bought years ago and not by me--though I can try to find out what type it is if that's important.
Oh, as a side note, it works perfectly fine with a normal ps2 controller.