+11 on so many points. I developed problems in 1995 when code editing took a quantum leap upward at a new job (supercomputing center, go figure ). Unbearable pain in my right index finger, shooting all the way up my right arm. What helped it:

Switching to left-hand mousing.
Physical therapy (and chiropractic therapy too).
Using as many keyboard shortcuts and macros as humanly possible.
Using a trackball, if possible. (This Logitech that Xavier linked to before. My only wish... that it included a real scroll wheel. The Logi driver can "fake" a scroll function (mode-shift on the trackball) but it's not quite the same for my taste. Otherwise, it's perfect.

It's weird... by now, I've been mousing with the left hand longer than I ever moused with the right hand. (Longer in years, and in hours by far.) I was thinking, all else being equal, that I would have started to see problems on my left hand long ago. But knock on wood, there have been no problems whatsoever. On the other hand (ouch, very bad pun), when I still sometimes forget and mouse with my right hand, say, picking up some work on someone else's workstation, the pain comes back in short order to remind me.

I wondered if it was just good habits, and it might be, but reading here, it may also be due to the posture improvement from the different centering you get with the left-hand position.

Using left-handed mousing with a right-handed mouse... is that sort of like playing upside-down left-handed guitar?

ORIGINAL: UnderTow

I wish Sonar would have better pen tablet support. All the (Pro Tools) studios I work at have pen tablets. They are so much faster and don't cause me any RSI.

UnderTow

No reason you can't use a pen tablet with Sonar and you don't need any special support inside of Sonar for it, unlike using one in an app like Photoshop. Remember that there's a whole lot of customization that can be done from within the driver app that comes with the Wacom tablet. I've tried my Wacom tablet in Sonar and it's pretty good, except for the fact that's it's WAY oversized for my work area. I switch between a MS Trackball Explorer and a Kensington Expert Mouse (it's really a big trackball with 4 buttons and a scroll ring) but not in the usual orientation with the unit sloping up away from the user; rather, I have it so the highest part of the unit is toward my wrist. Unfortunately this puts the cord in the way. I do it this way because it's actually more comfortable for me and my wrist that way than the normal way.

Hi all
Very interesting reading as I too am suffering the impact of 30 years of heavy mousing. I use a left hand trackball but that too is starting to cause trouble. A foot switch was mentioned a couple of times. Is this a commercial item or something that has been improvised? I'm in Germany at the moment so will buy Wobenzym and give it a whirl.
Cheers
CC

Something that I have always refused to use is a wireless mouse.  The extra weight with the battery inside requires more force to move it and therefore more strain on the hand and wrist muscles.