Hook a cdrom up to the board and boot something like Morphix or Knoppix and then do a lspci -v. That will tell us exactly what chipsets are on the board.
Ok, well it's easier for me to network boot Slackware (via an etherboot floppy), so this is what the first board says: (P6LX-A+)
00:00.0 Host bridge: Intel Corp. 440LX/EX - 82443LX/EX Host bridge (rev 03) 00:01.0 PCI bridge: Intel Corp. 440LX/EX - 82443LX/EX AGP bridge (rev 03) 00:07.0 ISA bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 02) 00:07.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01) 00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB (rev 01) 00:07.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 02) 00:0a.0 VGA compatible controller: S3 Inc. 86c764/765 [Trio32/64/64V+] (rev 43) 00:0c.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone] (rev 24)
The last two items in the list are PCI cards. I've yet to do the P133 board, but I think this one has the most chance of working. I've attached the lspci -v output.
Thanks, Adam.