I'm sorry that it's taken so long for me to post back. The power supply in my computer went out the other day and I had to wait around on UPS.
Anyway... My settings show up as follows:
r_overbrightbits 1
r_mapoverbrightbits 2
Upon setting r_ignorehwgamma to 1, my menu seems to be at something akin to the default brightness. Once I loaded a map however it looked far too bright, lacking much of the atmosphere inherent.
As it is, I have added "+set r_gamma 1" to my shortcut until I get this all sorted out.