and if you don't know what itanium cpu's are then you probably don't need them or need to know about them
also i have no idea what they are, and if you're interested in finding out more go onto google and search it
and if you want you can use 64 bit vista.
A notice to EVERYONE who has posted here with a computer problem, I highly encourage you to keep current with the forums, even if it's browsing for 10-15 minutes during lunch, or before you go to bed at night. There are many things that you can learn and apply to future issues. My goal is to help people get to a point where they can use their own knowledge to help themselves, and others.
Also please use the search button. You've got a 50/50 chance that someone's asked your question and we've answered it.