door glass installation

hi, i have an 05 90 that needs a new right side door glass. i have the glass and would like to install it. i have done this a lot of times on other cars and there always seems to be some special trick that is car specific that if you know it makes the job easy. is there a step by step guide posted anywhere here that i can read over before is start or any good advice on what mistakes not to make ?

thanks

steve