A few things you should know.
Printers: All the printers we're selling do power on, however, they are being sold as-is. Read the descriptions as not every printer is complete.
Fax Machines: They are untested, and with the exception of the thermal fax, their operating condition is unknown.
Computers: We include the original disks where possible, and you are free to install the operating system of your choice (though, avoid Windows ME like the plague). The graphics cards are either AGP 2/4x or Intel Integrated graphics. They can handle standard definition video playback and handle Internet and office tasks. For gaming, you will want an AGP or PCI graphics adapter 128MB of RAM or more. As for High Definition video, none of the computers being sold can't handle more than 480p, and there would likely be skipped frames and stuttering.
Note about Operating Systems: Linux Mint 8 32-bit is pre-installed on every computer with 256MB of RAM or more. The Gateways have DamnSmallLinux pre-installed. All the computers have Ethernet and Audio, making them ready for Internet use (if you already have Broadband and an Internet router, all you need is a network cable). I chose Linux Mint 8 because there's no need for anti-virus or anti-malware software, everything you need is already there and ready to go (CD Burning, DVD, Flash media, etc), and it's free to use and distribute. We encourage you to at least give it a try first if you plan on reinstalling XP. Computers that have only a CD-ROM drive need only a DVD-ROM drive to play DVDs.
Note about RAM: 1GB of RAM is the recommended standard for running Windows XP and any Linux-based operating system, and 2GB for Windows 7 or Vista (3GB Max for 32-bit operating systems). It's literally a plug-and-play procedure to upgrade the RAM on any PC.
However, the RAM used in the Gateway E4400 and Dell Dimension 8100 use a different type of RAM, called Rambus, PC600 for the Gateway and PC800 for the 8100. Unlike other RAM, you have to install the modules in matched pairs. So, if you want to upgrade 128MB to 256MB and there are only two slots, you need two 128MB RAM modules. Given the cost, 512MB RAM is the maximum you should get for the E4400 given it has two memory slots. With 4 slots on the 8100, you can get four 256MB modules to equal 1GB.