Lead Mapping and Lookup Fields

Lead Mapping and Lookup Fields

I am trying to work out a problem I am having with LEAD MAPPING.

When you are in the LEAD the boxed *required FIRST NAME & LAST NAME transfer once converted to an ACCOUNT are moved to the top of the page in an un-editable area.

The biggest deal I am having is that I still need that name displayed on the page for the the ACCOUNT, CONTACT, & POTENTIAL.  I was thinking this would be done via the LOOKUP field but I honestly haven't figured out how to use them yet.

Am I headed in the right direction on this?  What am I doing wrong?