Check for your motherboard on <A HREF="http://www.zida.com" target="_new">http://www.zida.com</A>
I guess it is the <A HREF="http://www.zida.com/product/bx98.htm" target="_new">BX98</A> Since the ZX was a subset of BX and most xx98 series boards from Zida actually had a compatible VIA chipset. They used to call it a VIA BX!
The board is long outdated, phased out as are the slot1 450 MHz P-IIIs. These dont perform as good and have the older ATA/33 controller but used to run almost every memory module I had, which couldnt work with the original Intel BX chipset!
Overclocking to 333 straight from 233 is too much, the processor wont work at this high speed. you might overclock it to around 266, or even 300 but 333 looks a long way. you probabely ran the clock at 83 or 100 MHz.
The processor overheating would just prevent it from booting, and a exposure to such conditions for a longer time would damage the processor permenantly. The board usually doesnt damage from a processor overheating, but if this overheating causes a short on the die or fuses some power wires its likely that the processor would draw larger current from a single line which would damage it, even the traces on the board!
girish
<font color=red>No system is fool-proof. Fools are Ingenious!</font color=red>