This just occurred to me... Devilspie? I haven't tried it, but I figure it might work right? Cause it works as a go between with your WM and your Composite Manager. Just a thought. Anyway, I just set up my .xinitrc for having 2 DEs, and it works great in Openbox (thought I have to get carried away, or I'll have a laundry list of DEs set up by October  ).

I currently run an Arch box, with Compiz as my WM. I used to use a Vanilla Gnome 2 Fedora 14 box instead which worked fine. Now, however, whenever I click the game moves from fullscreen to windowed mode, so the entire content shifts back and forth each click, it also requires I know where the button, object, link, etc will be after it has shifted, which makes things more difficult. I'm hoping it isn't WM related, or distro related really. If anyone has some sort of help, or suggestion they could offer, that would be great. Oh, just to clarify, I tried running "$ planeshift -fs" and it crashes instantly... so that wasn't the 'simple fix' I was looking for.