First of all, have you tried running MS Dash from his original softmod to see if it works?
If it doesn't then use HeXEn. It won't mess up his games / apps. It will delete any gamesaves for Splinter Cell, Mechassault and 007:Agent Under Fire, but leaves all other gamesaves untouched. It installs UnleashX as its dash, but gives you the option to switch to Evox.
You select either 2.1.2 to install a Kingroach softmod, or one of options 2.2.5-2.2.7 to install a Krayzie softmod. If your friend still has 007:AUF I'd suggest you use that option (2.2.5), if not then use option 2.2.7 (Splinter Cell) because all copies of Splinter Cell are exploitable and you can pick them up for pennies. Don't worry, you don't need the game to do the upgrade, it's just a useful back door for the future.
Once Krayzie is installed and working you reboot with HeXEn and select option 6.2 to enable the HD modes.
This post has been edited by Heimdall: Aug 26 2011, 12:34 AM