find duplicates by 'name'?

find duplicates by 'name'?

Hi,

We wantto clean up our CRMdatabase, and we discovered a lot of records of people who are moved, and therofore there e-mail, telephone number and company had changed, I'm suprised that it isn't possible find duplicates bij Name. How can I find all duplicates when it is'n possible to find them by name?