Word 97 and 2000 can automatically create backup copies of your open documents (select Tools-Options-Save-Save Autorecover info every:). It's a great idea that can save your bacon should you need to revert to a previously saved version. However, once the document is in its final form, these automatic backups just take up precious disk space. To delete them, select Start-Find. Type -.wbk in the Find dialogue's Named field, and select My Computer from the "Look in" list. Delete the ones you no longer need.