Have I got this right?? When watching a DVD on Projector The HTPC outputs the DVD be it PAL or NTSC in progressive scan. The HTPC can scale the image to match the projector panel resolution bypassing the projectors internal and probably inferior scaler. (You use Powerstrip to create the custom resolutions to match said panel resolution.) Is it the PC that does this itself or the DVD software? If it does the de-interlacing and scaling itself then wouldn't the output from a TV-Tuner card through the VGA port also be de-interlaced and scaled? Why then is a program such as DScaler required?