yes its really easy espescially if you have more than one hard drive just leave windows on your C: Drive and install the operating system to one of your other drives. when its installed you will get a men displayed for 30 seconds at the startup that lets you choose which operating system to boot
You can do a Dual boot on the same HD.. You need a program that can create another Partition on your HD such as (Partition magic) http://www.symantec.com/home_homeoffice/products/system_performance/pm80/
