contact won't open, it freezes

Hello ToniStanley,

Thanks for the question, and welcome to Apple Support Communities.

I understand that you are running into issues with Address Book on your MacBook Pro. The following article may provide more information in troubleshooting this issue:

Mac OS X: How to troubleshoot a software issue

http://support.apple.com/kb/HT1199

If the issue is not with the application, but rather one specific contact, you may want to back up the information then delete and re-add the contact.

Thanks,

Matt M.