There's a newer overclocking BIOS for the well known ECS/Elitegroup K7S5A mainboard.
This new one based on official 020809 Bios supports the new AthlonXP 2400+ and higher based on the new T-Bred Model-B Core. This BIOS adds many more FSB options and some memory tweak settings.
Supplied by Cheepoman from OCWorkbench.

OCWorkbench ECS discussion board
All K7S5A OC-BIOS Files
Scroll down to the bottom for the newest one.