when I install Windows xp 2600, I have a question here:
My os is windos 2000 professional, when I run setup, it shows:NTVDM CPU encounter an invalid instruction. CS:odbo IP: 0105 OP:62 fc 75 a5 b5 choose "close" to terminate program. when I want install it in dos mode. winnt.exe shows the program is too big .
How can I install a new OS? my old one have some question

The few people I've talked to who upgraded from another OS to XP have all had some type of problem... If at all possible, I suggest using a bootable CD and doing a clean install....