Clarifications...
Okay, thanks for all of the advice, and sorry for the late reply... keep meaning to check the board, keep forgetting.
It becomes clear that I should probably give a little bit more detail.
First, I am working entirely with audio clips, not MIDI. This probably doesn't make a huge amount of difference, as they both utilize volume controls, but it bears mentioning.
Second, I'm not really concerned with fading ALL sliders at once... my issue is wanting to record the automation of a SINGLE slider without recording underlying automation tracks on every other track (both RECORD and SNAPSHOT do this)
Third, I have, in fact, set up tracks with automation in PA9 before. However, due to the fact that it sets the data for EVERY track, if I then need to adjust volume in another track, I have to wipe out the automation data for the track (a tricky procedure, since getting rid of the underlying automation data in the track itself doesn't always do the trick), then set new data which, of course, can add keyframes to other tracks.
To set up fading automation, I usually find the point for the old volume/pan, make sure it's right, then take a snapshot. I then find the point for the new volume/pan, make sure it's right, then take a snapshot. Finally, I right-click the clider in console view and get to the automation data window, where I use the line tool to set the fade. The only problem with this is the fact that the two snapshots taken for the track are also taken at the same points in other tracks. This isn't a problem if I don't ever need to change any other volume/pan settings in these tracks, but a real pain if I do. (Are these the "envelopes" that were mentioned?)
Finally, the "Automation Data" track I was asking about was not the individual tracks' automation data strips (which appear below the audio data in the track), but the separate track named "Console Automation Data" that appears to serve no purpose except to create an extra track and cause me to have to de-select an output when mixing down audio.
As far as "splashing the cash", I wholeheartedly agree... I could definitely use a better mixing program. However, somehow I doubt that my P2 333MHz system and Sonar 2 would get along famously, I'm already almost done with my current project, and I really don't want to shell out $1500-$2000 just now.
The mind is willing, but the wallet is weak.
I'm going to look into the Envelopes option, as I believe I have messed with them before, and you're right... it seems like the best way to go for editing a single track. I just have to figure out how to use them.
Hope this additional info helps.