1999 Saturn SL2 Rear Door Panel removal-frozen torque screws

I have to remove the outer door panel to my saturn sl2 1999MY. When I try to loosen the torque screws around the parameter they appear to be frozen/rusted. What is the best method to remove these without breaking the panel.

http://www.youtube.com/watch?v=7G3PN6TYaJ4

OR

http://www.youtube.com/watch?v=whOOsv_EA8s

thanks for the links, i have already seen these videos and I am at the point where I cannot remove the screws since they appear to be corroded. I am looking for a work around or solution to freeing the fasteners.

PB blaster i would think is your best option.