i would recommend to anyone thinking of using the FSB to overclock to be very careful. a few years back, before i knew what i was doing, i decided to try and OC my PII 300 MHZ. i discovered the multiplier was locked, so i popped my FSB up to the next available level, from 66 to 100 MHZ. I fried my RAM almost instantly. It booted into windows, but not for long. Luckily i was using 2 banks of RAM, one was 100 MHZ, the other 66 MHZ. So, my PC100 RAM was still usable.
Also, remember that when you OC the FSB, you overclock everything on you system: video card, PCI slots, RAM, everything. So you run the risk of damaging those parts as well. that's why i'm hesitant to run the FSB up too high.
One of the nice things about the Abit KT7A series is it gives you the option to increase the CPU FSB independently of the southbridge. you may want to look to see if your system has that option
allgoodpeople
"It's a dog eat dog world, and I'm wearing milkbone underwear."