to your original question the answer is no
the kt7 is based on the via kt133 chipset and it only supports 100mhz fsb (some motherboards have jumpers/bios settings for fsb speeds in excess of 133mhz, but the boards wont run at that speed)
realistically about the best overclock you can get on a kt133 chipset is 105mhz-115mhz... the kt133 is a very poor fsb overclocker
but... you can buy a newer tbird and assuming its unlocked you can run the fsb at 100mhz and increase the multiplier to 14x (giving you a 1.4ghz system)