YOU SHOULDN'T DO THIS UNLESS YOU HAVE A MAJOR PROBLEM WITH EITHER WHITEPAGES OR YELLOWPAGES. IT WON'T WORK WITH ANYTHING ELSE.

If your data becomes corrupted due to a hardware or power failure, Microsoft alows you to repair the data(they're not really such bad guys once you get to know them).
STEP1 Save all of the records that you are working on. You won't be able to anything except close the program after you do the repair job.
STEP2 Push CLOSE DATABASE. Wait until there is no hard disk activty.
STEP3 Push either REPAIR WHITEPAGES or REPAIR YELLOWPAGES.
STEP4 Wait about 45 seconds and close the program.
STEP5 Pray to your local diety.