Kim, you might wanna look into the TH2Go real close before buying monitors. It has very specific resolution limitations, and you really have to match up the right LCD to get the best image. Native resolution of your LCDs is a big factor, because if they're 1600x1200 native (for instance) they'll have to scale the image for the TH2G rez. We all know, scaling on LCDs sucks.
What I did was expand my single 22" CRT to triple 22" CRT. CRT is by far the best value right now, and has numerous advantages over LCDs (brightness, scalability, no dead pixels, etc) with the only disadvantage being size. The only reason anyone should consider an LCD is if size/weight is their biggest consideration... but everyone just blindly jumps on the LCD bandwagon without considering why.
BTW, you can get a hold of off lease/refurbished CRTs for ridiculous prices nowdays... I purchased my HP p1230's for $175 CAN each, shipped. They're just rebranded Mitsubishi 2070SB tubes, match up perfectly with my origninal NEC 2141SB, pretty much the best CRT tube every produced (my desktop runs 3x 1600x1200 at 100Hz). Check out http://www.canadamonitors.com
-they even ship to the US now, dirt cheap. Find yourself monitors based on the Mitsu 2070 or Sony G520P tubes, but make sure you do your research, because not every claim on that website is correct. For example, right now they're claiming the NEC FE2111SB is a 2070 tube, which is incorrect, that monitor can't touch the resolutions a real 2070 can.
Last point, before someone starts complaining about huge screen gaps w/ the multi-CRT setup, fresnels solve that. I'm still trying to figure out how to mount mine, but I have 3 16"x17" 650mm focal length fresnels already sitting here. I just need to go all arts-and-crafts on a stack of cardboard boxes to make some mounts.