How to run apps that dont run on XGL desktop

You might encounter some apps that do not like XGL enabled desktop(for the less informed, aka Beryl, Compiz, Compiz-Fusion enabled desktops). Most often these are DirectX based Windows apps that you want to run through Wine or probably some Java App like Lazarus.

I found two different solutions with different approaches.

First approach:
Shift your present XGL enabled session into a separate Window and launch a nonXGL window manager on the main Xsession. I found this approach funny, but works.

Create this script and copy it to ~/bin for single user only or /usr/bin for global access. Give it a name like noxgl(u can change this to your liking)
#!/bin/sh

if [ "$1" = "-h" ] || [ "$1" = "--help" ] || [ $# -eq 0 ] ; then
echo "Usage : noxgl [options]"
echo " noxgl -b [options]"
echo " (-b option means 'border' so it adds a window border)"
exit
fi

if [ "$1" = "-b" ]; then
if [ -x /usr/bin/kwin ]; then
WM=kwin
else
WM=metacity
fi
DISPLAY=:0.0
$WM&
shift
$@
killall $WM
else
DISPLAY=:0.0 "$@"
fi

Now u can launch ur app as noxgl -b appname [options]

The second approach is to launch a nested Xserver using Xnest and launch ur app into the Xnest. You need to install Xnest for this.

Use the following commands:
Xnest -ac -terminate -geometry 1280x1024+0+0 :3 &

This will launch Xnest which is an Xserver as well as a Client.

Now launch ur app into this:
DISPLAY=:3 appname [options] &

A word of caution: By default Xnest will not allow Window borders, so it will be a hell to manage multiple windows(if your app uses them). So before launching ur app launch metacity using the above command and then launch ur app.