How to set Myphone theme as default on 5800

[Malc]

Hi - just installed the Myphone (iPhone lookalike) theme to my 5800XM.
It is working fine but to get it started I have had to set it up as a shortcut so when I swicth on I get the normal shortcuts menu and have to select it.
Is there a way that it will go straight to the Myphone theme ?
I have obviously looked at Settings-Personal-Themes-General but I only have the Sound Waves themes (slected) and the option to download a theme.
The Home scr. theme only has the Shortcuts (using that) and basic and Contacts.
I just can't find anywhere where the Myphone app can be installed as a theme.
It is because it is an app and not a true theme ?
I am on Myphone 2.2
Thanks