hi there... first of all, exe file cannot be used on maemo.... exe is for Windows... and this is linux... i am using jumblo since i bought this phone and it's working quiet well... this is the way to get it worked: - Address: username@sip.jumblo.com Password: yourpassword and sign in, there should be no problems with that... try this and if there is any other problem post it here will try to help rgds ravi