To resolve this problem, follow these steps. 
NOTE: Follow the steps below only if you originally installed Office
		  2000 by using a CD. If you installed Office from an administrative
		  installation, please see the following article in the Microsoft Knowledge Base:
		  
		  
267968 OFF2000: Program Quits After You Update from SR-1/SR-1a Administrative Installation
 Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: 
322756 How to back up and restore the registry in Windows
 - Locate your valid product CD Key, which is located on the
				back of the original CD case.
 
 If the product CD Key begins with
				GC6J3, the Product Key is not valid in Microsoft Office 2000 SR-1/SR-1a.
				Contact the reseller of your Office product to obtain a valid product CD key,
				or purchase a valid Microsoft Office 2000 product. After you obtain a valid
				product CD key, continue with the following steps.
 
 For more
				information about purchasing Microsoft Office, visit the following Microsoft
				Web site:
- Click Start, and then click Run.
- In the Open box, type regedit, and then click OK.
- Locate and select the following key. If the key is present,
				follow steps a through d. If the key is not present, follow steps e through h.
				
 
 HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\<
				GUID> where GUID is the Product
				Code for the version of Office that is installed; for example,
				{00000409-78E1-11D2-B60F-006097C998E7}. More than one GUID may be listed under
				the Uninstall subkey. If you see more than one, select each GUID until you find
				the one that has the correct product name listed for the DisplayName value; for
				example, " Microsoft Office 2000 Premium".- For the selected GUID
					 subkey, select the ProductID string value in the right pane.
- On the Edit menu, click Rename.
- Type OldProductID and then press
					 ENTER.
- Go to step 5.
- NOTE: Follow these steps e through h ONLY if you did not find the key
					 listed at the beginning of step 4.
 
 Locate and select the following
					 keyHKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows/Current
					 Version/Installer/Userdata/S-1-5-18/Products/< GUID>/InstallProperties
					  where GUID is the product code for
					 the version of Office that is installed; for example,
					 {904000001E872D116BF00006799C897E}, and where the text S-1-5-18 may change
					 depending on the method used to install Office. More than one GUID may be
					 listed under the Uninstall subkey. If you see more than one, select each GUID
					 and look in the InstallProperties folder until you find the one that has the
					 correct product name listed for the DisplayName value; for example, "Office
					 2000 Premium."
- For the selected GUID
					 subkey, select the ProductID string value in the right pane.
- On the Edit menu, click Rename.
- Type OldProductID and then press
					 ENTER.
 
- On the Registry menu, click Exit.
- Start any Office program.
- When the Microsoft Office 2000 User Information dialog box appears, type your valid product CD Key (located on
				the back of the CD case). Follow the instructions on your screen.