Yes, install 2 os system. But very importent. You have in stall win-xp first. But donnot forget make partition for this 2 os system . Xp 10gi. and for vista 20gi !!!!:onion14:
That's not the truth. Why Vista can't play old games is because most of the old game use direct X 9.0c or below, but vista is using direct x 10.
If you want to play old games, try to find a direct 9.0c for vista.