I left my post brief, thinking the TIE file would cover it all. It didn't... they're trying to fix it ;)
Very quickly, here's the steps... (I'll put together a better entry for Tips & Tricks)
Use the Software Installer install "MIcrosoft HTML Rendering Engine 7" into an XP Bottle. (Rename the bottle to "EverQuest II Exended" just for clarity)
Use the Wine Configuration tool under Manage Bottles to enable a Virtual Desktop of 1024x768
THEN go back to the Software Installer and install "Other Application" and choose the EQ2X_setup.exe file.
You will see a grey box appear. Let that sit for a while. It should change to a login screen. Close the login screen (which will allow the install to finish).