Change Hotkeys for Save States

[EckoAbrams]

I'm currently playing ePSX with a xbox360 controller and was wondering if I could somehow map the save/load/change save state buttons to a button on the controller?

[ShendoXT]

You can use Joy to key (http://www.electracode.com/4/joy2key/JoyToKey%20English%20Version.htm).

[MasterPhW]

Or XPadder (http://xpadder.com/).
It's 100 times better, I even donated for that great piece of software.