bluetooth-ing contacts and messages-impossible!

hi,i just got a new phone and i'm trying to transfer my contacts and some text messages from the HTC cha cha to it,i'm told by my provider that i can only do it by bluetooth-ing them to my computer first as once i put the new sim card in the new phone the current one will stop working and i'll lose all the data.
i know how to use bluetooth and have transferred lots of photos before but i can't find the file with the contacts,nor one with the text messages,anywhere on the htc phone.i desperately need to do this asap,any ideas of where they might be/what i can do?
thanks
june