Anyone, everyone

Yea I purchased this external hardrive:
http://www.wdc.com/en/products/Products.asp?DriveID=79

Problem is that I can't use it with Final Cut Pro HD very well, so what I want to do is open the external hardrive case and just pop that mug into the computer. I will probably do it anyway, but I just wanted to know if anyone else has had any experience with opening external hardrives. I really can't afford to botch this one up though. So any advice would be nice.