Originally posted by Infinite:
there is no bios in vmware...
While you may be right that there isn't a bios "file", there's most definitely a custom VMware bios, designed to give fake system resources that are later emulated by VMware for the emulated (guest?) operating system.
I'm pretty sure the fake bios is generated each time VMware boots up a virtual machine, which is altered by the virtual machine settings (ammount of system memory, emulated scuzzy controllers, etc).
The guest operating system can actually snarf the bios to gain system information.
To answer your question, no.
Changing the generated bios with another one would be retarded and do nothing but cause VMware to crash when it tries to boot up.