well your board isn't made by the best of comapnies. overclockers and enthusiasts wouldn't even consider ECS. but we should be able to get a little bit out of it.
first off, make sure your memory's running synchronous to your fsb. in other words, 266mhz, equivalent to pc2100. synchronous is almost always better anyway.
next, disable some options in the bios. namely advanved pci and agp functions like fast writes, agp master 1 ws write, agp master ws read, and pci 1/2 master 0 ws write. these were listed in your manual so you should have them.
then while in your bios, turn off all ports and devices you don't use. includes, game port, parallel port, serial ports, firewire, modem, sound, floppy controller, etc. a lot of these devices run off the pci bus so any one of them could be limiting it.
try that for now and see if you can get any further.
BSOD is a windows function which means the system is booting. So you can set to higher FSB. Also the chipset is the VIA KT333 and it's a newer mainboard so I don't expect that to be the problem.
When exactly is the system crashing?
During Boot? (MB, RAM, or processor can't handle the higher FSB)
Windows splash screen? (peripheral hardware)
Once the desktop is up? (possibly video)
When you start launching applications? (video or thermal)
After you've run a while? (Thermal problem)
First suspect would be that video card. The FSB is probably locked to the AGP clock. ECS stuff is ok for simple desktop systems, but it is not intended for overclocking so the features are not there (like independently setting, ram, pci, agp and fsb speeds). The AGP slot speed did not show up in your screen shots.
Ep, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS