Installing Office 2003 On 2 Computers Having Trouble Installing Office Pro 2003 On New Windows 7 HP Computer, HELP!?

Having trouble installing Office Pro 2003 on new Windows 7 HP computer, HELP!? - installing office 2003 on 2 computers

I have tried using the feature (patch 2, 3), no luck. After a valid product key, says: "Setup can not have a version of Microsoft Office on your hard drive ...."
Then select "Check Disk C", which appears:

Error 1608. Setup was a version of Microsoft Office 97, 2000 or XP on the selected disk.

So, what should I do now?