Thrush, what dvd are you trying to watch ? Don't be shy lad, we're all grown up's here
Firstly, bin WIN DVD, it's shite, what you want lad is Cyberlink Power DVD

I can MSN it to you, or I can zip it with winzip and e-mail it to you (about 7 meg in size roughly)
Windows Media Player may not play the DVD as there's no DVD encoder installed. Normally installing WIN DVD would of got round that issue.