There is NO DOUBT that the P3B-F WILL support the P111 1000E. If not today, then soon, through a microcode update in a new BIOS release.
The PIII E "coppermine" series is a BX-oriented chip series. All PIIIE series chips are made to be compatible with BX.. given the proper BIOS microcode update.
Remember.. Intel also makes the chipset. Any PIII chip that they make which expects 100 system clock is AIMED DIRECTLY at BX. The other chipsets 810, 820, 840 (and the latecomer..Solano 815) support 133FSB. If BX couldn't handle the 10 multiplier, Intel would not make the 1000 MHz coppermine.
My guess is that the latest BIOS offered on ASUS downloads will support a full 10x100 post. It may require some 'external' mutiplier dipswitch testing.. one of the settings (or all) will work. Alternatively, the jumperless operation mode might be the way to do it.
Can anyone offer an explanation as to why Intel would offer the PIII 1000E other than for BX ?