Yes, I have the x-lite software. After I had posted I realized I had not tried downloading the latest software from Sipgate and Skype. Then I tried unchecking start-up when windows starts, for both systems (in the new software). Pleased to say that it works now. I just have to click on whichever icon on the desktop I wish to use, then after that call exit, and then click on the other icon, and that works fine too. I clicked on the link you kindly provided, and as you say, I think doing it that way would also work. It's really handy being able to pick which system to use, as I can choose to use the best features from each, as needs dictate.