Include an attached document with a concurrent program?

Hello,

Would it be possible to have a concurrent program added to a request set that could generate an output of an attached document?

For example...
I attach a quote to a purchase order, and when I run my request to print the purchase order, the attached quote is included.

Basically, I am looking for a way to print attached documents at the same time as their parent document instead of manually printing the attachment (without purchasing software that manages this for you!).

Thanks for the help!