Thank you, I will let you know the answer. If not, how long does it take for you to make a new profile ? Accounting the C510 isn't gonna be much different from the C702 so there's no reason for it not to work.
I just received the phone and even though it's recognized perfectly by both the computer and the Sony Ericsson software, MyPhoneExplorer gives me a "Couldn't open COM3" error message.
What should I do in order to fix this? Even if the Sony Ericsson software is good enough, I prefer MyPhoneExplorer.