Electric Advice. [TANKS]

["Aahz." <ErickKilmer-at-comcast.net>]

    My knowledge if electronics is limited and from my preference here I 
see some of you know quite a lot more than I do. I want to trip a relay 
with a relatively low powered source, say a 3v output. A bit of research 
tells me this isn't going to work unless there is an amplifying 
transistor between the output and the relay, I understand this in theory 
but have no practical knowledge of how I would assemble it. Can anyone 
give me somewhat simple direction on how I would go about this?

Aahz.