Not sure if you guys have heard of these applications before, but i'll post here in case you guys need it for avfx.

http://crazybump.com/
Software which generates normal map, bump map, AO, spec from an image.It's easy to use. Some games studios use it. It's only free for 30 days though. There's a beta version for Mac too.

http://shadermap.com/
An alternative to crazybump.

Some people prefer to use the nvidia plug in for photoshop though.