mobile phones differ by country and even provider. It is simply impossible to say for a special case yes or no without very detailled information.
Can you connect your mobile phone to the PC?
Is it found as drive by your PC?
Can you transfer any data on it? From the drive? Or with a special Motorola software?
Can your mobile play MP3s?
If you can connect it, maybe the Ringtone Maker can transfer the files direct.