The best advice you'll get here is to switch from that 'free' Template Monster template. TM hard-codes a lot of stuff into their templates which make adding mods difficult and styling them impossible.

You can use the Web developer plug-in for the Firefox browser to see what TM did with the styling of the other headers and try to apply it to the code that came with the mod.

Lots of sample templates here:

http://(sorry, site offline)