How I envision this happening.

So I picture myself somehow getting in touch with someone in the Cronkite camp. Maybe through a letter, or the six degrees of seperation. Then I assume that somepoint before the official end of summer that WC will be in Manhattan (where I work and very near to where I live). At that point I could meet him with my cell phone in hand (must remember to bring cell phone). Then I will have a quick chat and he will record the greeting for me.