1.  Verizon Wireless has blocked the feature to allow you to upload your own ring tones.  However, you can buy the ring tones from them or one of their authorized sellers.  I have a Razr V3m and I bought the Motorola CD and cable that is suppose to allow you to rip and make your own ring tones.  Then you were suppose to be able to upload your new ring tones to your phone via the software and the cable.  Well, I noticed that an icon on the new software was missing and called Motorola thinking I had the wrong software or something.  Motorola informed me that the software was correct and the missing icon was because Verizon Wireless has this function blocked on all of their phones.  This was also verified via Verizon Wireless technical support.  So if you want to upload your own ring tones, you may want to steer away from Verizon Wireless phones.

2.  If you buy a cell phone on eBay and your service provider is Verizon Wireless, (per technical support at my local Verizon Wireless), if the phone is not made for Verizon Wireless, they will not set it up for their Network.  Now if this is true for everywhere else, I do not know. 

This information is to help you in deciding on a service or buying phones and accessories.  Wish I had read similar before I bought mine. 

However, please check with your service provider, since after writing this, things may have changed.