its an easy job, i did mine last fall. i ordered my parts from gmpartsdirect, they were much cheaper than any local dealerships. do yourself a big favor, order the felts and then the window repair kit from kirbans if you're window is loose or rattles when you shut the door. gm used some real cheap parts on the windows and the kit eliminated my rattles. yeah, its another $50 but i thought it was well worth it. the worst part of the job is adjusting the window for the "perfect fit" around the seals. it took me a couple of hours to get it just right but i eliminated most of the wind noise. i wouldnt worry about scratching any paint, its not that tough of a job. by the way, the kirban kit also includes the plastic pieces that hold the lower door panel on so you wont have that thing flapping in the breeze after your r&r job. just let me know if you're looking for some help, i'm right around the corner. good luck, aaron