if you have the mini usb cable then sure you can do whatever you like with it, search around on google there are all kinds of mods for Motorola phones. but just for putting images and ring tones on it get Motorola Phone Tools. extremely easy to use
search the web of your motorola and download the software. but if your PC will just recognize your CP then you don't need the software. but i doubt it also. if you have USB cable also then try to plug it now and check if your CP will be displayed on "F" removable device over your PC. images or songs or whatever can be uploaded into your PC if you have what i said above.