More table layout

[Giuseppe Bilotta]

Hi,

I'm trying to achieve the following effect:
   +---------------+--------------------------+
   |  Class    Mod |        Race          Mod |
   +---------------+--------------------------+
   | Fighter   +3  | Elf/Half-elf          +1 |
   | Rogue     +3  | Dwarf/Gnome/Halfling  +2 |
   | Mage      +4  | Orc/Half-orc          -1 |
   | Cleric    +5  +--------------------------+
   +---------------+


What I basically need is a way to let a horizontal rule span only
a limited range of columns.

--
Giuseppe "Oblomov" Bilotta