I have this very old laptop, it has a broken screen so I had to use an external monitor.
I couldn't use Ubuntu 9.10 and 8.04, because it was impossible to setup the external monitor.
But the installation of Vetor Linux was very easy and everything works out of the box.
I'm very happy, great distro.
Laptop: Dell Inspiron 4000
Processor: Celeron (Coppermine)
Memory: 315MB (185MB used)
Operating System: Vector Linux 6.0 Standard Final Built on Feb-16-0
Resolution: 1024x768 pixels
OpenGL Renderer: Mesa GLX Indirect
X11 Vendor: The X.Org Foundation
Audio Adapter: Maestro3 - ESS Maestro3 PCI
Power Button (CM)
Sleep Button (CM)
Macintosh mouse button emulation
AT Translated Set 2 keyboard
SynPS/2 Synaptics TouchPad
TPPS/2 IBM TrackPoint
TOSHIBA DVD-ROM SD-C2502