Print large posters at home - Freeware, Software and Daily Downloads - The Kim Komando Radio Show
Thanks to Califelephant's excellent link at post #22 and ATOMIC_PUNK's excellent posting at post #25 (as well as the posters of other great photos here, thank you all!) it seems that anybody now has everything that they need to have posters of any size made for free (just the cost of your own printer ink, paper, and time)
Have fun :-)
"snicker"