copy the weboshd.sh or webos2hd.sh given in pg 245+(not sure) in /home/user directory. if u have done so then just type this in xterminal bfre playing non hd games

sudo gainroot
sh weboshd/webos2hd.sh

and for playing hd games u can type
sudo gainroot
chmod 777 weboshd.sh /webos2hd.sh
sh weboshd.sh/webos2hd.sh

or to avoid this u can install the new preenv-hd and then just desktopgen-hd appinfo.json for the hd game.then u dnt hav to type again nd again in xterminal