Wow, that appears to be an old, old version of software. If you're using internal voice mail on this version you can't do voice mail-to-e-mail unless you upgrade to a newer version. If your voice mail is on an external server you might be able to do it.
Another idea: if they have a cell phone capable of recording a call, dial in from outside, press RECORD on the cell, and play back the message. Or get a recording adapter and plug it into PC mic jack or cassette recorder (remember those?) and play the messages, record on the device.