I have only owned the car for a few months but really just noticed this tonight while driving as I ran the windshield wipers and the water streamed back across the door glass and... straight down into the doors. So when I got home I decided to pour some water on the outsides of the glass to see how bad it is and it pretty much all goes straight down into the doors.

How big of a deal is this? And more importantly, how can I fix it?

Thanks guys.

-1999 GTP sedan