I just wanted to say that from my experience processing power can be just as improtant on the k12ltsp thinlient setup as RAM, depending on the use of the lab. You mentioned it is for a non-profit. What will they be using it for. Is it a lab for children to use, senior citizens, or employees of the non-profit? Factors such as that should weigh heavily into the design of the system you build. For example kids will be using lots of processing power since they enjoy the games. The Seniors will also, try running gnome-system-monitor while a couple of people are playing the computer in chess. If it is for employees to do daily tasks such as word prcessing, spreadsheet and other document creation then the processing demands do go down a bit except for when the programs are beig launched. I have noticed using gnome-system-monitor that when I have the students using thin clients in my class(7) all open the openoffice stuite at the same time the CPU stays maxed out till all the programs are open and then it goes back down. However, the RAM never goes above 1 GB when they are word processing. Here are specs on my system and it cost me $1900 to build over a year and a half ago. Dual Xeons Processors @ 2.4 Ghz Sony DVD-ROM Sony 3.5" 1.44 MB Floppy Intel Mother Board Model SE7505VB2 The Board has Dual Network Ports one at 100MB/s the other is Gigabit ethernet The board has onboard Silicon image RAID controler. It also has onboard Yamaha sound. 550 Watt Fsp power supply Western Digital 120 Gig SATA hard drive Nvidia G-force FX 5200 video card Intel Tower (black) The thing I liked about this setup is that when I installed K12LTSP 3.1 and all versions since up to 4.2.1 where I currently reside. All the hardware just worked, I didn't have to fight with any driver configurations. Also if you decide to go with this setup. not sure why, but even though it is a dual processor board you must use the regular kernel not the SMP kernel. Appearantly on this board intel has linked the processing together at a level below the OS because the SMP kernel doesn't function correctly (been there, tried it, didn't work). If you are interested in where I purchased I can give you information but you should be able to surf and find all the different components. -- Open Source, The Right Thing To Do!