How to enable underscore on VMware Server 2

Underscore with jp106 keyboard worked on VMware Server 1.0.x after adding:

xkeymap.keycode.211 = 0x073

But it doesn't on VMware Server 2. $HOME/.vmware/preferences still seems to be alive to do something - just found a symbol in binaries. I don't know what it's for.
After some investigation, it could be enabled again with $HOME/.vmware/config, by adding same thing.

Enjoy,