I bought WinDVD XP upgrade version yesterday. I took a test of it and found that it's really great in comparison with ATi DVD. I don't do many tweaks except gamma value. The image is sharp and the stability is good with or without hareware acceleration. I think that it's quite promising for DVD replay. IMO, the DVD replay by WinDVD 3.1 is equal or close to ATi DVD player with additional DTS passthrough. Many comparisons are ongoing. Radeon LE and WinDVD XP together do give me great picture and sound so far.