Possibility to launch the firstrun wizard (or some configuration tool) without deleting the lottanzb.xml

I had set my LottaNZB to run in front-end mode. Now I want to switch it to stand-alone mode, but can't do it without deleting my lottanzb.xml, wich allows me to have the firstrun assistant again. This is too fastidious, and too complex (where's that damned lottanzb.xml :) ?). It would be nice to have the ability to change those basic settings directly in LottaNZB. Maybe with a checkbox "Launch firstrun wizard next time" (wich delete automatically the lottanzb.xml at LottaNZB shutdown), or the direct edition of the config file in LottaNZB.