I don´t think you can uninstall the mod, as in only remove the mod and restore plain RTW.
To start it, when it´s installed, just use the Rome.exe, as usual. The icons can only be used for desktop shortcuts - or something like that.

Anyhow, my deepest respect for Wlesmana, I´ve only been able to istall the mod today, and I´m dead impressed. All those great looking units done by one person, it´s almst unbelievable. About the only thing I didn´t much like are the elves and their far-east style weapons, but that´s not Wles´s fault, I didn´t like their design in the movies to begin with, and Wles has done a magnificent job of keeping the movie designs.