I am in need of an app that will batch convert pdf docs to, preferably, pcx or tif format. I know Photoshop has a batch conversion component, as does JASC PaintShop Pro, but converting pdf's is not as simple as, say, converting .jpg to .tif as both are already raster images.

We have a client who will be giving us some 500 B&W pdf images a month that need to be converted to .tif or .pcx so we can inkjet them onto a mail piece. Given a test I set up, this would take about 15 hours to complete. That just isn't an option for us. Any ideas?