User Registration- input address

Might look at Cimy User Extra Fields list in Plugins/Meta though don’t know if it will allow you to require data on existing fields.

So, is there a way to use this plugin to have it fill in the first and last name fields of the core wordpress profile? I have created first and last name fields with this plugin, but they appear separate from the first and last name fields of the original profile? Is there a way to get it to fill out these fields?