Unless it was removed, there might be an option in the Contacts application to send a caller directly to your voice mail.
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.
Great question Scorpio21.
With your Droid Charge, you can set a silent ringtone for people that you want to ignore. Please see page 42 of the user manual http://bit.ly/NPc55c for instructions.
You can also block unwanted calls and messages for up to 5 numbers with our call & message block feature. http://bit.ly/qjfCB6
I trust this information is helpful to you.
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