Do you have a product code for the perforated tabs you're using... such as
Avery 11136 or 11137? Use Word's Labels feature, click the Options button,
and see if the tabs you're using are listed. If they are, then you can use
this feature to create the text for and print the tabs.
In Word 2003, Tools - Letters and Mailings - Envelopes and Labels - Labels
tab Options. After choosing the corresponding product, back in the Envelopes
and Labels dialog, click on New Document, enter your text, etc.
In Word 2007, click the Mailings ribbon tab, Labels, etc.