How do I reinstall Microsoft Office?

My computer is really slow despite being free of spyware and viruses. I'm planning to do a total reinstallation of Windows but then I lose some programs. I'm most worried about MS Office since I don't have the product key anymore.

How do I reinstall Microsoft Office?antivirus protection

as long as you have the disc just download a keygen....i've never paid for a product key for any version and it's only taken a few seconds to get keygens and activation workarounds.

How do I reinstall Microsoft Office?computer repair

I never suggest you to use KeyGen or something like that. If you have an Original CD of Ms. Office, I suggest you to call the Microsofts customer service at your country. Tell your trouble and they will guide you to re-install your windows or Ms. Office.

Oh, yeah...

First they will validate your name, your address, your store, and so on. So you must provide them your name and address, and from what store do you buy that office.

Thanks ^_^
As long as you have proof that you legally purchased Office, Microsoft should be able to help you out.