If you use Thin client ( cost around $100 in ebay) with the Magic, You dont need to turn on comptuter for 24 hrs to receive call. There is one more option for Magic jack, try Ooma  which does not require to turn on computer to make and receive call.  The downside of Ooma voice service is it cost around 200 to 250 dollars , however unlike in magic jack its one time fee and you can make unlimited call forever. But the biggest concern is I m not sure it will work properly in Nepal as it requires atleast 350 kpbs broadband speed , while resident broadband speed of Nepl is only 128 kbps.  If you anyone is using this service in Nepal, please let me know.