I don't know what version they are for but I found they don't work with vmware 6.5.2, but if you follow the guide for pheonix mod your own bios (extract it first). It's definitely a different bios in vmw 6.5.2, there are a lot more acpi roms when extracted (13 compared to 3 or 4 in those bios' listed/linked to
well my 6.5 bios is working with 6.5.2, and reported as "identical" in the other vmware 6.5.2 thread... I am lazy to mod it myself right now, but if i get some time i will report back about it.
Do the bios mentioned above in post #44, and in other posts, have slp as well as slic ie are they ok for XP and Vista?