i looked through the manual online.. and found that the board only supports 66, 100 and 133mhz FSB's.. you CPU is on a 100, so to o/c it, you have to go up to 133, which i highly doubt will run as 3.5x133 = 466mhz.. even if the CPU can take that. your PCI bus will be running way out of spec, 44.3mhz, and i doubt, even more so, that you HD or AGP card can't take that.
you can upgrade the processor though.. it supports P3's.. all you need to buy is a socket 370 to slot 1 adaptor and away you go.
The CPU will likely handle a 133MHz bus, but if that uses an older I-440 BX chipset or something like that then it does not have the correct AGP multiplier (some do have the right PCI though) for 133MHz.
You might be able to still find a program like SoftFSB that lets you adjust the bus speed by 1Mhz incriments in Windows. I have not heard anything about this program in a long time as motherboard started having options built into them like that by the time the PIII came out (mostly do to Abit's great overclocking features in the system BIOS).
I have a Celeron 366 that is based on the same type of core and I can do 550Mhz with it.
it is a ZX chipset.. i found the mobo maker and looked it up.
i know the ZX doesn't support 133.. but there are a few BX boards that do.
i know Asus (CUBX) and Abit (BX133) released BX boards that say they support 133.. but i've just been looking over the online manuals for them and only the CUBX actually does.. PCI bus and all.. i'm not sure how.. but it says it does..
the BX133 can't though.. it says that the board can support it, but it can't guarantee it as the PCI bus would be out of spec.
check this pic out: www.geocities.com/silis01/abitasus.JPG
you'll need to type it in as geocities doesn't like direct links..
the abit BX133 is on the left and asus CUBX is on the right.
The i440 chipset only has the 2/3 AGP multiplier, so it only supports a 100MHz bus. They do support a 1/4 PCI bus though. That means everything is in spec, but the AGP slot. A few companies released boards like this, but they did not get along with all graphics cards. Some of the nVidia cards (TNT2 mostly back then if I recall correctly) could take up to a 100MHz AGP bus (150MHz bus at 2/3 AGP). This is way beyond the 66Mhz stock speeds. Most newer cards are a bit more finicky and you are lucky if you can get beyond a 75MHz AGP bus.