How do I get my printer to work with this firewall?

I have a Lexmark X3470 Printer/scanner ant the firewall will not let me print or scan?
I run Vista Home.

Is it a networked printer? Is the software being blocked?

It’s not a netnork printer. It’s a personal printer and the software is being blocked. Yes.

When you launched the software you should have received a D+ alert. If you did not then open up Comodo and go to the D+ tab/Advanced/Computer Security Policy and look through the list of what is there and see if you see your software for your printer. If it blocked then right click on it and edit to trusted.