I work on coworkers' and fellow students' computers on the side for extra money. When I come across an older computer with limited memory, I ALWAYS recommend the owner try antiX, regardless of whether they have used Linux before or not. This is a great distro for beginners who are used to the "Windows" feel. IceWM is the default environment, giving a Windows 2k look and feel to the distro. antiX is loaded with great software, and has Debian's Synaptic available for installing new software.
antiX is not just for old computers and newbies. It has a MEPIS kernel, which a lot of Linux users appreciate, and absolutely FLIES on midgrade to high-end hardward. This is definitely a distro to check out. Easy to use, sophisticated, great features, and installs in a flash! GO DOWNLOAD THIS .ISO! :-)