I've never used triggers before, but I was given a Korg M1 and can it be used as a control for triggers? I know almost next to nothing about electronic drums.
You may be able to trigger using a jack/xlr input and running some software such as superior/BFD, but I'm not sure how easy or possible it would be for you to map it with the software, I've never tried running a trigger through a midi keyboard before.
If you really care about triggers then this is something 'cheap' and easy you could use instead with software.. http://www.alesis.com/triggerio
Or alternatively a dm5 if you want stand alone hardware to trigger a kick or snare.
http://en.wikipedia.org/wiki/Korg_M1Its onboard MIDI sequencer