How to manage a REALLY BIG graphic?

[Betty]

I concur with Kevy Baby. Having designed graphics for the side of box trucks and billboards, it takes a LOT of memory. I have 2 gigs at work - on a 2.0 ghz and saving a file can take 10 - 15 minutes. It's difficult to work with because you want to save often - but not too often because it takes so damn long. Opening a file is the same... as it printing. We use a large format printer and printing can take 30-45 minutes for a poster sized print.

I would suggest you take maybe 9 images at a time... 3 rows of 3 - in photoshop or similar program. Start in the middle and work out. Lay them out the blocks of 9 and then assemble each block of 9 to the others.