This first is modem speed. With a well-equiped machine, a 28.8 or 33.6 modem is sufficient for surfing the message boards. If you are using anything slower, then you will most likely need to upgrade your modem. Most people should be fine with 16MB of RAM or more. I would suggest at least 32MB since message boards take an enormous amount of memory to function properly.
Most processors can handle the load just fine.
I would suggest at least a Pentium 75Mhz, but I have seen a 486-25Mhz processor handle the boards in the past. We want these boards to remain a great place for people to enjoy civilized discussion about college athletics.