I finally got Xubuntu 8.04 running on a 10 year old Sony Z505RX laptop using the instructions found here and here. It runs OK on the laptop’s meager 128MB RAM and Pentium II processor. Unfortunately, there’s a weird high-pitched tone (capacitor buzz?), but it goes away when I stick a Wifi card in the slot. It is usable, but it takes a very long time to run updates or compile anything. Maybe it’ll run better on my XO laptop.