You dont right click that. ok that purple box with red arrow what u downloaded from forum yes. have u installed? make a new folder on ur desktop called Soma then with your purple icon with red arrow install that to your new folder you just made on your desktop. then in that folder look for the black soma icon called "Euro Client" right click it then change the stuff in the "'Target" box
hope this helps reply if this dont work or you get stuck...
@Casper