Is there a way to change the text displayed in the reputation bar?

<page name="REPUTATION_VALUES">
  <Resource tag="EXALTED">Exalted</Resource>
  <Resource tag="FRIENDLY">Friendly</Resource>
  <Resource tag="HONORED">Honored</Resource>
  <Resource tag="NEUTRAL">Neutral</Resource>
  <Resource tag="UNFRIENDLY">Unfriendly</Resource>
  <Resource tag="VALUE_0">Hated</Resource>
  <Resource tag="VALUE_20">Hostile</Resource>
 </page>

Also, can anyone give an overview of how reputation is accrued? I know users can give/take to/from other users, but how does post count tie into this?