Bit of a stupid question, but I've got an opportunity to get a few really cheap footswitches.

Is there a simple mod or something I can do to a generic footswitch to make it do something, other than the obvious? I wouldn't mind making it into a killswitch and putting it at the end of my board.

Any advice?
Well for a killswitch you would need two jacks, and a SPDT switch (i think) and you would have to wire it so the switch killed the connection between the two jacks.

Edit: it's not SPDT because i can't remember the switch you need.