Office 2000 Professional Serial Microsoft Office Professional 2003 Trial?

Microsoft Office Professional 2003 Trial? - office 2000 professional serial

I have Microsoft Office Professional 2003 installed, but my Windows and I lost. I still have the product key, but I lost the CD key. I'm using Microsoft Office 2000. I know that if you have a process in a series where you bought it can bring. I want to do so. Could I have a website? I do not really trust download.com. I want a site that is 100% secure. Thanks