have a gamepad question?

For example. I just bought a graphire4 pen tablet. I like it, but it doesn't have enough programmable buttons, just two. If i were to purchase some gamepad, something like the Zboard Fang, could i use that for hotkeys, and macros in a program like photoshop? For example, if i wanted to change between the clone tool and a brush tool, or bring up the color box quickly in photoshop, would a gamepad like that work? Or is there a product out there that would allow me to program macros and hotkeys? thanks for your help :)