In response to some feedback:
This is the cable kit I received with the phone. On the left is the power adapter and above is the typical USB to miniUSB cable. Both the power cable and miniUSB cable plug into the white cradle from behind, and the phone drops in. Neither cable directly connects to the phone.
Cradle PN 42SOPUA
power supply PN 0202PQA
The USB cable they show here looks like it connects to the side of the phone, and would only charge (likely the same cable you have PN 0201HVA). The cable for the cradle is just a standard USB to miniUSB like with most digital cams and mp3 players.
You might not be able to connect the phone directly to a laptop via a cheap store cable to download. I do not have one to test, but I will try to go get one. In fact, my charger cable has no where to directly connect to the phone, nore does the MiniUSB.
Are you connecting your cable to the left side port that has a slide cover? This is also the port where the headphone adaptor connects. It has a lot of pins, so it is possible that it is chargable via that connector, and yet not have download support.
My best advice without having the cable you have, would be to try to get the full cradle kit.
One more thing you MUST do:
On the phone, go to Functions/Settings
Press 5 (user support)
Press 6 (Data Comm)
Press 3 (USB mode select)
select 3 (User Select)
Now everytime the phone is hooked to the computer, the phone will ask you to choose Data Trasfer or Mass Storage mode.
The default is Data Transfer which is only for au Audio Music Port. It will keep attempting to run that program, and will not let you do anything on the phone without it.
Mass Storage mode will make it act like a normal USB storage device, and allow Sonic Stage to find it. Remember, you only have access to the MMC card, and not the phones primary memory.
As for Sonic Stage, I am using Version 4.2 as well.
Im glad someone is finding the information usefull. Feel free to keep asking questions.