Here's how to change the default names of the GoldMine "Tabs" (lower half of the Contact Record);
1. Click the arrow to the left of the tabstrip.
2. Click Customize.
3. Single click to select a Tab Item in the list, click Rename.
4. Enter in your new Tab Name, hit Ok.
5. Now OK your way out!
Pro Tip: Click "Customize tab labels globally" to affect everyone.