Hmm, looks like they actually included some features in some releases. If you really want to flash the BIOS make sure all numbers of the downloaded BIOS match your system. All names/version/model numbers should match. You can also open your computer case and look at the number printed on the motherboard. Are you sure you have the K7t266 Pro?
Flashing instructions should be included with the BIOS file.
TheMajorMMX - Intel P200 MMX @ 225Mhz - V-Tech (PcPartner) Baby-AT mb w/ Intel Triton TX chipset - Nvidia Riva TNT2 M64 w/ 16MB - 256MB M-Tec SDRAM - Still running.....