either Windows 2000 or Office 2000 as a download, and if you mean either of these it looks as though you've got a pirate copy - no doubt in error. If that's the case I'm afraid we can't help you - use of the software would be illegal.
When setup runs from the CD it should give you the option of which components to install. You can choose to only install Outlook and Word or you can choose to have a "minimal" install of Excel etc. that would require you to indert the CD when you wanted to install them.
You will need to select "custom install" or similar when the prompt appears.