VGN-T2XP DVD button won't start Power DVD

[Steve755]

I have done a clean install with my own copy of XP Pro on my Vaio VGN-T2XP. Everything now works as it should (I think!) thanks to the excellent help from the members of this forum......except for......

I no longer have a copy of the WinDVD program that shipped with this laptop so I have installed PowerDVD instead. The under-monitor Play/Pause, Stop and Skip buttons work fine but I cannot reprogramme the DVD button to open PowerDVD instead.

The help page suggests selecting "Launch Application" from the drop down list but Im not offered this option and the "Advanced" box is greyed out. Any suggestions?