Can’t install Microsoft Office 2008 in My Macbook

Hello everyone,
I'm a new Mac user. Recently, I've purchased MacBook 2. 4GHz ,Intel Core 2 Duo, 2 GB DDR3 memory, 250 GB hard drive.
I want to install Office 2008 lIcensed Mac version, in my new MacBook. I already got Office 2008, Non licensed software in my Mac. I've removed the Non Licensed, Office 2008 from my Mac, (moved it to trash) and then tried to install the licensed version but it doesn't work.
Anyone help me to install my Office 2008 Licensed version in my new MacBook. I need the licensed version of Microsoft Office 2008 immediately.
Thanks,
Muneer
