I need to install operating system on many pcs. How can I copy operating system on one hard disk and when ever any computer is malfunctioning, just use that hard disk to copy operating system to that compter… Thanks for help.

I am asking because I have tried in the past only to get a error message after restart. I would like to update theMB drivers to my pc but cant cause of the error i get. I dont know what or if I am doing anything wrong. Please help if you can! ( my pc is windows xp mce)

I know a couple:
www.5starsupport.com
www.computerhope.com

but I would like to find a really good one.

I know I have the correct computer address and my messenger settings are turned on, on both computers. I can send from the first computer and the second one receives the message. However when I try to send messages from the second computer to computer number one it fails.

I just got a new mac laptop and I got the firewire to connect my old mac with my new one. I have tried migration assistance but I can not figure out how to transfer my itunes library and my iphotos. Also, is there a way to deauthorize all computers from your itunes account at the same time?
Thanks!