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