Installed MMCD files
Do you receive the regular updates from Elbox ? Did you install the latest files ? Perhaps your versions are outdated.
Attached settings to voodoo
Did you use the Screenmode prefs program to change the Workbench screen mode to Voodoo ? I think that the graphics environment has to be initilized for FastEthernet to work.
ran pciinfo and it sees both voodoo card and ethernet card
It will see them both already after installing the MMCD files. This does not mean that the drivers are installed correctly.
iface_init could not open DEVS:networks/FastEthernet.device unit 0
Does it also mention a return code (other than -1 which just means "open failed") ?