So got the apple cable and booted up the box... All good, so then u go to re-install the is from my retail tiger disc, and whola!!! Welcome to kernel panic land... So I get worried that the box is shaffted. And I try and try again, same result, so I go swapping vid cards and ram and then it occurs to me.. My retail disc is 10.4.0 and the pm install discs are 10.4.2... So u grab the original install disc with 10.4.2 on it and yay!!! It installs no dramas and is stable as urhmmm something that is stable. Lol happy now!!!