Any Linux tools to download rings or wallpapers to Motorola C333?

Hi All,

I'm a new user of Motorola C333. I've bought it
as a cheapest solution to connect my Linux portable
to the Internet via GPRS
(using the http://dur.ch/konfiguriert/c333/ ).
But now I'd like to make use of other nice features
of this mobile.
Are there any Linux tools to fully control this
mobile?
Where could I find the extended AT commands
used to control the multimedia features?

TIA & Regards,
Wojtek Zabolotny
wzab@ise.pw.edu.pl