The closest I may get will be Johnny V's suggestion to record live drums, convert to midi and then, use samples of the initial audio (or some nice published samples). That might be ok.

AudioSnap requires a fair amount of manual labor. It's like creating Acidized or REX files - how well the process works depends solely on the ability to identify transients correctly. The simpler the material, the easier it is to identify transients.
 
If Cakewalk had called it "BeatSnap," people would not have had unrealistic expectations, and used it in the way where it worked best...if the source you're working on isn't percussive, it's a battle. But for drums, plucked instruments, and the like, it's very useful.
 
The complex warping algorithm in Ableton Live, which IIRC is licensed from zPlane, is the closest I've seen to doing an effortless job of what people wish AudioSnap could do. I use Live's warping to prep files for Traktor, which doesn't deal well with any files that don't have a metronomic beat.

Thanks for that; I'm headed to research Ableton live. I suppose that technology is not available 3rd party to use in Sonar. And............by-the-way, thanks for all of your Guitar Player columns I used to read back in the day, carry on sir.

Ask yourself this...
How bad is it ? You don't need to fix every single drum part, only the ones that are unmistakable.
If his timing is drifting, don't be too concerned with it unless it is blatantly noticeable.
A little humanized drift is perfectly acceptable and much more preferred over a mechanical structured BPM.
 
The problem really starts when you fix a drifting tempo and then have to fix everything after that point.

Although the images are no longer available, this might be useful
 
http://forum.cakewalk.com/Editing-multitrack-drums-is-completely-impossible-This-needs-to-be-addressed-m3362190.aspx#3362631
 
 

Yeah, AudioSnap is hit and miss with transients out of the box, but if you know how to work with it, it's very effective. I'd tend to agree with Chuck in that sometimes it's better for the song to have things breathe a bit. Did you need to quantize it? You'd be surprised at how tight things sound once everything is playing together, rather than listening to the drums in isolation.
 
But that said, I lock my stuff in fairly tightly in most cases. I prefer the way it sits and it gives me more options for layering loops and sequences so nothing flams out with the typically busy drum parts we have. Check out this thread for a few ideas on how I get around the dodgy transients: http://forum.cakewalk.com/FindPost/3388204

Thanks Lord Tim that is the thread reference I meant to post but my notes are a bit messy. Was very helpful to me.

Glad it helped! I've linked to it a few times now and I'm worried I'm wearing its welcome out! 

Yes it's amazing how bad the timing an be in a rock song and most would not notice. The problem for me is some of these tracks I have are original songs I `recorded with a real drummer and it's more the sound of those drums that bugs me than the odd timing issues. This is where drum replacer is awesome.  But I have other tracks recorded only with stereo drums and a drummer who sounded great, those I leave alone. 

Thanks, I will view the suggested links.
 
The drummer's overall tempo is fine, and I don't mind a little drifting especially with the nature of this particular tune. The drum sound I'm getting is pretty good. He tends to lose it a little coming in and out of fills ( a kick and snare hit here and there are off). Sometimes it's the hi hat or ride that's a little off. Again, I'm not picky about tempo and don't even mind, and sometimes like e.g., when the chorus  speeds up.
 
I'm going to continue to view the links suggested and work with Audiosnap and (I also have Melodyne Studio 4.1).
Also....I am going to try to have him play to a click (he did not do this beforehand).
 
And.....I thought we'd try a section at a time. For example, we will practice and play a verse. When we get a good one, then we'll copy it for all verses and do the same with the other sections. We won't record the fills (e.g., last measure before next session) until last.
 
Thanks so much for your input!