Not without frustration. Only way is to remove the door panel and start tweaking the set screws.... I have the same job to do and have been putting it off.... I think its only one or two at the rear of the door that control the alignment of the upper edge of glass to top frame weatherstrip, but need to confirm... may get to it this weekend... if so I'll post results of the effort....
[Edited on 18-8-10 by mert]