I've just got a Win XP laptop as a hand-me-down, I'm only using it for fault code reading and ECU mapping of car systems. Although I've not tried yet, and at first glance they seem to work on XP, some of these programs say they require Win 98 to run. I'm just wondering about the possibility of dual booting the system with 98? I guess to do this I would add a partition on the hard drive using BIOS and install it to there? Have just seen this - http://support.microsoft.com/kb/306559 Must look harder in future.