I'm not sure what you mean by "unix and x windows".... I'm not sure if you're talking about a dual boot machine, or some version of linux running a GUI, in which case I'm not sure why you would seperate the two...
And what are you asking when you ask how to "connect" the drive...
Please clarify!!
Tutorials and the like can be found at:
http://www.linuxnewbie.org/