I have a very very old HP Pavilion 6835 that formally ran Windows ME. I'm currently looking at installing Ubuntu Server on it to host some files, but it is only capable of running anything that is able to run under 128mb of RAM for long periods of time. (I have tried Puppy Linux which works fine, but when left alone for more than 5 min it no longer responds.) Ubuntu appears to be more stable, but its current versions fall short of the requirements I need.
I do not know if this is also important to mention, but wired connections are out of the question. I must have wireless capabilities or else I just wasted a CD.