Hi there again... I just found this on my quest of DNS caching... http://isc.sans.org/diary.html?storyid=4687
Lanny: I think you can install CentOS 3.x, 4.x, and remotely perhaps CentOS 5.0 on a P3 like yours, I have a couple of Dells P3 running CentOS 3.9 server edition and CentOS 5.0 (not connected to the outside world thought) which serves web sites locally and its been working without a hassle.
Telmex here is not very bad service...it's awful. :) But Internet via cablemodem it's worse...