What is that program that turns an image into dots?

[PureAppleJuice]

an image into like a load of dots? And you can print it out over a load of A4 pages to make a large image. I remember it being posted on OcUK a while ago and can't remember for the life of me the name of the program. Tried searching the forums and the interweb but to no avail.

Cheers,

 

[PureAppleJuice]

Hooorah! I kept looking for stuff like rastify and crap like that :s This can be closed now, thanks a lot