Interesting. I have 2003 (11.6113.5703) and it doesn't have a Spelling
& Grammar tab (just a Spelling tab). And, that tab doesn't have a
Custom Dictionaries... button. ;-)

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Regards,

Tushar Mehta
www.tushar-mehta.com
Excel, PowerPoint, and VBA add-ins, tutorials
Custom MS Office productivity solutions

In article ,
says...
I have office 2003. If you also have Microsoft Word, you can do the
following...

Tool | Options | Spelling & Grammar Tab | Custom Dictionaries...
Select "Custom.Dic" and click "Modify..."

Select your word from the list, and click "Delete."

HTH :)