Address Book Crashing

Hi!

I needed to update my personal addressbook so I imported my Yahoo address 
book (using a Tab delimited file).  Now, I can't access the addressbook.  I 
get the C+ message of death & the program closes.  I can get and send e-mail

just fine but I'm trying to get at least one all inclusive addressbook 
someplace and I'd prefer it be in WP Mail than in Yahoo or Outlook. 
Everytime I access the book & try to have it show all, it crashes.  Help!

Thanks

Vandi