Windowed mode

[Gaugamela]

The target line for EB is: "C:\Program Files\Activision\Rome - Total War\RomeTW.exe" -nm -show_err

In vanilla and in RTR and any other mod I was able to add -ne after the path to start the game in window mode, but EB has this "-nm -show_err" section and after attempting I get a Send/Do not send MS error with EB when trying to open.

What purpose does the additional target code have, and is there anyway to play in windowed still? Thanks, id really like to play but not at the expense of missing out on important im communications.