I would also like to know how to customize the VENDOR BILL template. I've followed the instructions to go to Lists>Templates but there is nothing listed for a VENDOR BILL, only for a Bill Payment (which also has lots of limitations). Every time I try to search or Google help on this, it just comes back to editing my INVOICE template. I don't necessarily need it to match the design of my vendor's bill, I just need it to look halfway decent. 

I would be happy to post a pic/attachment, but this community page doesn't seem to work either. I'm logged in but it won't let me add an attachment.