A 10GB root drive is pretty small...this machine should have been set up the other way around...with a 20 gig primary.
Putting Application Data and Distributions on a separate drive is not recommended and can lead to problems with the file system on down the road, so I wouldn't do that. Besides...for the most part, you're moving text files...we're talking kilobytes per file. The Software Distribution folder contains update files...including SP2 if you have installed it. You can install your applications to the other partition, as was suggested, but the application data will be stored in the root directory as it is a hidden system folder.
If you are that critical for space on the drive, back the system up by making an image of the drive, burn it to a cd, and turn your System Restore feature off. This will dump all the copies of the registry now saved in the root directory...you'll gain more space doing that than moving a few text files to another partition. Just remember to make a new image of the drive every couple of weeks so you don't loose too much when you have to restore the system.
There were some good suggestions given you here by Staff members who probably realized that what you were asking was not going to accomplish what you were after...I would submit to you that you look their suggestions over as a way to save space in the future...and take advantage of their experience. After all, that's why you're here, right? To get suggestions from others who may have ideas to lend?
Edited by wannabe1, 16 October 2006 - 10:28 PM.