I have just submitted the fix suggested earlier by Lars in the format that I mentioned above to SourceForge today. I am not sure if I did this correctly as I have not done this before.
I am also not sure how a patch proceeds from the queue into the SVN so I don't know if or when it will make it into MediaPortal.
Just an update to let you know that rtv picked up the patch I submitted to Sourceforge and incorportated it into the SVNs I believe from those dated 22/08/2007.
I have just installed SVN 15638 and the PowerDVD 7 panel is appearing again.