There are several references in this forum regarding manual sunroof: install, re-build, etc.
DuBois in Hollister put together a nice pictorial, here:
http://www.bmw2002faq.com/component/option,com_forum/Itemid,0/page,viewtopic/p,439150/#439150
I got my cables from BavAuto and followed his detailed text.
And here's a good parts reference:
http://bmwfans.info/original/114/Lim/2002-M10/USA/L/A/1972/07/mg-54/
I just used it to "see" how the rear weatherseal is installed.
OK, I had to look closely, but it proved useful.