The best way to get the sunroof out is to do the following, which I think is also in the faq:

-vent sunroof and disconnect springs holding liner panel
-unscrew frontmost(4) trays and top rear (2?) screws to remove outer hard panel
-remove screws (including 4 under the spring-loaded wind deflector) holding down track (there are about 8 I think)
-slide liner panel forward again and remove track with liner panel IN the tracks (you don't want to remove it)

Make sure you pay attention to where everything goes (digital camera?) even if only disassembling for a few hours. I had lots of fun reassembling mine 4 times after a few days apart (and with a broken lift arm)

Good Luck,
Will
--
1990 740 Turbo, on its way to stock specs, maybe beyond