I remember doing this job a couple of years ago, when I first started working on these cars. In retrospect, I think the procedure required a little more skill than I had at the time, however, if you have all of the parts, tools, and a full weekend (just in case), I think it is a reasonable DIY job.
I disagree with Larry Bible here, and would recommend replacing the damper with the belt tensioner, only because these do wear out, and in order to replace them you have to go most of the way through the disassembly anyways, so you might as well put a new one in there.
My write-up is
here, however I also recommend the CD for the illustrations. Also, do a search through the archives as well.