Unconfirmed notes from the submitter:

Install Cedega as normal.

Grab WoW from a previous Windows install.
Edit $PATH/WoW/WTF/Config.wtf

Insert:
SET gxApi "opengl"
SET gxColorBits "24"
SET gxDepthBits "24"

Save and exit.
Run:
cedega $PATH/WoW/WoW.exe -opengl

- Updated 10/27/2005 -

The following config file addition has been reported to
make the pointer work properly:

[AppDefaults\\WoW.exe\\memory]
"Windows" = "win98"
"MemoryLayoutOverride" = "0x10000000"