[78F350]

Originally Posted by fanguy

... I think your talking about the "window regulator" check out these links. Hope this helps and get you going down the right path.
...Porsche Boxster Window Regulator Replacement / Window Switch Replacement / Window Motor Replacement - 986 / 987 (1997-08) - Pelican Parts Technical Article

You actually want to have the window up to remove it. In that link fanguy posted, figure #3 shows a green arrow. -Remove the plug at the green arrow, then Loosen (just enough to make it slack, it holds a clamp) the screw marked by the yellow arrow. One front and one rear, that's all that holds the window.