Hello! (Have tried various searches for this and not come up with anything - maybe i've got the wrong search terms...?) Anyhow, in the continued absence of a decent skype app, I'm trying to find a fairly straightforward way of doing (free?) voip from my android 1.6 to my friend's windows xp pc in argentina? very preferably over 3g at my end too? my searches so far have led me to believe this might be possible in sip (although i know very little about it and am also having trouble finding 'idiots' guides...) can anyone recommend any applications/how to's - both for my android, and for my friend's pc? many many thanks in advance.