which websites can i get free or low-cost images from that can stand being magnified

['at a turk!]

into a poster size A1/A2? also what can you tell me about photo libraries and how much they charge....also are there free ones....which is the market leader and which are some of the most popular.

can i print images from a google image search...and how can i know which ones will blow up well and which ones will go pixilated with even slight magnification?

[Steve K]

Google 'Free Photo library' then take your pick. There seem to be a few out there. I found this one -
http://www.sxc.hu/
From a google image search images of over 100kb should give better resolution, the bigger the file size the better quality.