Will this adapter work on this system?

I'm wondering if this device will allow me to be able to use the PS2 dualshock controller on the 360? I want to be able to use one for such things like shooters & for fighting games, due to the 360's awful D-Pad. Thanks!

http://store.videogamecentral.com/xfps360-xbox360-max-shooter.html

Not to sure bud!
Although for my PC i do have a ps2 controller and a xbox360 controller that work with my computer. So i wouldnt be surprised if there where some modded controllers or addons that allow you to use other controllers with the 360. But ive never seen it done before for 360.

what i want to know if you can use your ps1 controller as well because i think the ps2 controller adds a bit more weight because of the analog for fighting games