Help! I recently got an ibm thinkpad r32 w/ p4 1.6ghz dvd drive, it has xp pro spanish version installed. I tried to clean install my laptop by using my xp pro eng. ver in the dvd and setting the bios to boot up using rom drive but the drive doesnt light up and error pops up saying "non system disk" (if rom drive is the only choice). is it possible to change the os? why cant i do it?