My office just bought some PCs and notebook preinstalled with windows vista.The problem is that some of our engineering software not compatible with windows vista.Is there anyway that I can run these program or am I eligible to install pirated windows XP?Or maybe we can run virtual XP in vista?

Hope some expert can help me cause cannot do anything with vista install.Someone suggest me to buy windows XP but we already bought Windows Vista....kinda waste of money right?