Hello everyone. I need detailed programming from my Drum tracks and its getting a bit labor intensive. I am going to purchase a Drum Trigger device, probably Roland as the cheaper Alesis units have negative reviews, and need help setting it up to trigger AD2. If anyone has experience with this and has any tips or things to avoid, it would be appreciated. I have not settled on a Trigger unit so advice there would be helpful as well. Thanks everyone and looking forward to trying this out

Most all Digital drums use the GM mapping. AD is an odd duck and does not use GM mapping on 90% of the sounds so you'll need to use a drum map to direct the triggers to the correct sound, Or you can go into the brain and re assign midi note values.  
What I do is play my parts on the kit monitoring with the brain for zero latency. I then just drag the parts to the correct note value. If your kit is one of the higher end kits then it will have more articulation of things like hi hats. My kit is a basic Yamaha I got for $500. The good kits are well over $3,000. I get pretty good results first time around and then a bit of editing and moving notes to utilise the variety of sounds. 

you have options from edrum kits, & octapad type devices for playing in with sticks, and mpc/maschine/pad controllers for playing in with pads... 
 
many edrum brains, and the octapad allow for custom note mappings so your vst choice is not a concern if you wish to play in with sticks, but some pad controllers may not allow for note remapping of the pads.
 
 
 

Thanks for the replies. I  realized i might be overthinking this. I prefer Programming by dragging beats from AD2, Copy-Paste,and in Step Sequencer, put everything where i want it. My accents can be in odd spots so i thought i could just play the accents , typically Kick and snare, on a controller to save time. There is an Octapad used in my area so might check it out

I borrowed an Octopad a few years back and decided what I really needed was the whole kit.  
But then I can sort of play a real drum kit. No point in buying a whole kit if you don't play drums. All you need is a couple of pads.
What you gain with a pad controller is the ability to hit it with a stick. This may or may not result in a bit more dynamic control of the snares velocity as well as better control of rolls. You can get pretty good a dynamics with your fingers on a keyboard. But the rolls sort of need the sticks.
 
And a trick I quickly learned was don't quantize the snare of tom rolls. Highlight the rest and quantize but leave the rolls alone. Rolls are a life form out of quantize time.
 

Cactus Music
Most all Digital drums use the GM mapping. AD is an odd duck and does not use GM mapping on 90% of the sounds so you'll need to use a drum map to direct the triggers to the correct sound, Or you can go into the brain and re assign midi note values.  

But AD provides a Map Preset for GM:
http://screencast.com/t/qFcq3ReZrY6j
 

Yes it does but you loose a lot of the benefits of multi samples, it becomes like session drummer. 
I certainly throws you off after over 30 years of having a standard format. But I figured give it time and I'll get used to it. I learning to like it better because you can add flavour to the hi hat very easily now.  

I use the older M-Audio Trigger Finger (Not the Pro) to trigger my drums for AD2.   There is a video tutorial which shows how easy the mapping is done and it's a simple drag and drop procedure or press the L for Learn and then press the controller pad for drum assignment.
 
See the video HERE and you can move to time 12:10 to get to the mapping section quickly. 

I have a Korg padKontrol and I'm having a pretty lame time trying to set it up (in AD). Maybe I lack patience but it's a real hassle when I just want to play!

I dropped this ball for a bit and now im back to solving this so belated thanks for the replys everyone. Considering an Alesis Sample pad, Beat up used Octapad{they are expensive} or a MIDI keyboard controller which ill need at some point anyway. Im not a drummer and just need a few kick snare accents that take me hours to not get it right. Thanks everyone