PS2 Pad to PC Issues

[XTTX]

Well, I've got my pad hooked up right now to my PC; however, I'm having one issue. There's a conflict when pushing two buttons on an axis at the same time. For example, If I hold down LEFT and press RIGHT, the RIGHT will not register. If I hold down RIGHT and press LEFT, the LEFT will trigger, but the right will cancel in the middle of a hold. The same happens if I hold UP and DOWN respectively. I believe it has something to do with the converter I'm using. This is the adapter: http://www.merconnet.com/product_info.php?products_id=452

Edit:
BTW, I have already downloaded the drivers and tried mapping to keys via JoyToKey.
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-XTTX

[XTTX]

Whoops, well it seems that this issue has long since been addressed. Solution was the Up+Start+Select code. The pad works fine now . A mod can lock this.
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-XTTX