It won't run at 133 fsb. try increasing the fsb+ in 1 mhz increments. The fsb/pci should be 100/33 . Since you have PC100 memory, you can't have memory clock =host+pci. You can try it if you have very good quality memory. Otherwise leave the memory clock=host clk.
And yes, the multiplier should be 7.5 but if you had done the pencil trick then you can try higher multipliers..