I just read this,..and have downloaded the progs myself
The following steps should help you produce video to play on the P800:
First you need to get TMPGEnc to convert .ASF and .WMF to .MPG. No matter what the dimensions of the video are, this program changes it to 320x240.
Then you need to get VirtualDub to resize them.
Go to "video", "filters". "add" and "resize." Set the resize to 192x144.
Go to "video", "compression" and pick Microsoft MPEG-4 VK1 codec V1.