This is really a fantastic piece of software, I highly recommend everyone checking it out if you're into pattern/texture map creation.
“So often software will advertise one thing and not deliver. Your program not only delivers but does it with ease.”
“Chief among my pleasures is Filter Forge, which I've been ranting (positively) and raving (voraciously) about ever since it entered my life.”
Resident Enlightenment Manager Linden Lab, makers of virtual world Second Life