But I don't know how reliable it is and it doesn't restore program files. Here is one link:

http://www.tweakxp.com/article37556.aspx

I've always wondered if one could do it themselves by creating an empty folder called "Progam Files" on the other partition/drive and use the MMC(.msc) to mount the drive/folder:

http://support.microsoft.com/kb/307889

This would be a way to use ASR in a quick way without putting programs in jeopardy,but I don't know how well the usual Windows application reacts to being mounted when looking for the C:\ root directory program files folder.

Perhaps someone more experienced will weigh in.