I am building a computer for my dad and i'd like your opion on which motherboard i should use. keep in mind that it needs to be stable, will be using DDR266(pc2100)Ram and i only want to spend AUS$200 max on the motherboard but will spend $240 if you really think that the $240 motherboard is much more stable and better.
*I also allready have the network card, sb vibra sound card and an external modem all i need is motherboard, cpu and ram.
*also will any of these motherboards fit a celeron? im asking because i was thinking if i get a really good motherboard and a cheap cpu($100) i can then buy a really good cpu later on (in 5 months or somthing) when the prices go down. can i do this or should i just buy a pentium 1800a for $313?
thanks for you help.
*Xp Home will be installed on this office computer. It has to be Pentium so its quite.
Here are some of my options for the motherboards:

Asus:
P45333: 533Mhz FSB,3x DDR333,6PCI,6-channel audio $240
P4S333-C: 400Mhz FSB,3x DDR333,6PCI,6-channel audio $175
P4S333-VM: 400Mhz FSB,2x DDR,3PCI,AC'97 audio,Vga,Lan $160

Gigabyte:
GA-8IE: 533Mhz FSB,3x DDR266,5PCI,AC'97 audio,Usb 2.0 $200
GA-8IG:533Mhz FSB,3x DDR266,5PCI,AC'97 audio,Usb2.0 $230
GA-8IRX: 400Mhz FSB,3x DDR266,6PCI $170

PS: i need the motherboard to last, its not for games or overclocking, just stability and maybe for future upgrades

Then i wouldn't go for the fastest in line , but keep in the middle (the 400Mhz thingies).

Since AsusTek has proven to me to be very stable , and GigaByte has proven the direct opposite of that (Still have a very wacky P3 Gigabyte motherboard here) ; I'd suggest the 2nd in line from AsusTek.

Mind you that if it's going to be an office pc , it might be better to get all on-board. One complete total system for less price and still nice working, then go for the 3rd Asus with all the on-board functions. it only has 3 pci left , but you don't need them anymore , since everything is on board ! Bummer is that you can't use this for upgrades.