New to this group, so apologies if you have seen this question before..

I have an MSI mainboard (K7T Pro), the BIOS allows selection of 66, 100 or
133 FSB speed. I am looking to upgrade my processor which is an AMD Duron
850 MHz.

All advertised AMD CPU's appear to be 233MHz FSB as minimum, does this mean
my motherboard will not support this FSB? If so what is my best processor
upgrade option?

Thanks in advance. Chris.