hcg

I have a 1994 Saturn SC2 with a sunroof. Recently, my sunroof stopped being able to close. When I depress the "close" button, I hear the motor running, but not even the slightest pull to close it. My only thought is that the linkage for the closing part of the motor has been disconnected/snapped. I did hear a noise when it stopped. Saturn dealer claims that they hae to replace the whole damned thing, at a low cost of $870! Riiight. Any thoughts on how easy/hard this would be to fix...assuming that the linkage is my only problem?