Processor Change

If the mobo doesn't go up to 333mhz, the CPU will not work at all or will run at a reduced speed of 266mhz which may or may not be unstable.

Since they no longer make mobos or CPUs for Socket A... you don't have much options or than looking for older boards online or someone giving them away.

Yep... agreed... unless you already happen to have DDR 333 on that 266board...

If you need new RAM and a mobo, you might as well buy an AM2 socket setup. Those boards are just as cheap or cheaper than a rare socket A.

Newegg sells an AM2 from MSI for $45.00 (VIA with built-in video) But its AGP. (shocking) But for $52, MSi board with PCIe x16 slot. (Great price) $58 gets you an NForce board from MSI... (on board video + PCIe) - I dont recommend ECS or biostar.

Then you can pop in a $45 Sempron CPU or a $75 or so for an AMD64.