Anyone do Volunteering?

[maddog04]

I'm off for an interview (don't want to put the mockers on it by saying which job just yet so please bear with me) that sees me having to sign up as a volunteer. Been told there's one member of the interview panel is BIG on the role of the volunteer as opposed to anything else I can bring to the role,
so.........................has any one got any advice they can give me through experience etc. as to what to say ref volunteers/volunteering?
thanks in advance