New to EQ2 dual boxing

I wanted to start dual boxing 2 accounts on the same computer, but when I have 2 up they both can lag slightly sometimes, not for a long time just for a minute or so every couple hours. and the games use up almost all of my ram. I wanted to know if other people are able to do this. I do play in extreme performance. And in addition, when i zone with both characters, it takes foreveeerr. I find i need to zone one character at a time and it will take less time.

System spec:

intel dual core E6420 @ 3.0 ghz

ram: CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model TWIN2X2048-6400C4

and 2 gigs of older ram, I don't remember the stats of it as i'm at work and can't look it up. So a total of 4 gig

video: EVGA 640-P2-N821-AR GeForce 8800 GTS 640MB 320-bit GDDR3 PCI Express x16 HDCP Ready SLI Supported Video Card

HD for my eq2 dir: Seagate Barracuda 7200.9 ST3500641AS 500GB 7200 RPM SATA 3.0Gb/s Hard Drive

I have 2 seperate partitions on this drive, one is for windows. I have a 2nd hd that is 200gb, but eq2 and windows run off the first one.

Should I be able to run 2 instances at the same time and should i be having problems with zoning?

EQ2 is not a pc friendly game. When the developers wrote it, they expected for processors to be the main power focus as they were back then, and video cards to be small. Unfortunately, processors have stayed relatively slow compared to their earlier growth, and dual and quad cores have become the norm, while graphics cards have become the monsters.

Unfortunately EQ2 doesnt take advantage of these... so... sadly best way to make EQ2 function well is get ONE badass processor, and a Geforce 3... I keep hoping that the devs will fix this...

I see in your sig that you are six boxing are you using 6 computers?