@Vaccano: Well it's a bit of hack because it's not an SMS, so it's not really a group SMS - it's a group MMS (you'll find, for instance, that some more basic phones won't support MMS however you can send MMS messages to email addresses). I don't think they cost the same here in the UK, no idea about anywhere else. Also, if I were you, I'd test it before you actually try and use it because when I tried it it didn't work (although I think that was a network issue, rather than a Windows issue).