Well I'm not extremely computer hardware savvy for knowing what's best for the best performance for multiboxing on 1 computer so could use some help of what to upgrade to get better performance.
Here's some specs on what I'm running, need anything else just ask and if you can include where to find it
Video Card: NVIDIA GeForce 8600 GT
Ram: 2GB
Processor: Intel(R) Pentium(R) 4 CPU 2.66GHz
Monitor: 24" Sceptre X24WG
(Using Windows XP SP2)