As far as I know, a pdf cannot be edited, even with the Pro programme... you need to have the original document (either a jpg, doc, xls...), make the changes you wish and then turn it again into pdf. I've worked in a company where contracts were sent to customers in pdf format in order to make sure they *could not* be changed. Anyway, I'll ask around and if I find out that I'm wrong and it's possible to edit a pdf, I'll let you know!

Btw, I think you don't know me, but I'm also a BCer, friend of generalblossom :)