And you wouldn't to the best of my knowledge.
QM COA functionality has it's own configuration area.
QM-->Quality Certificates
You can't change the output program used by QC22. You'd have to make a custom transaction. SAP does not really support smart forms in QM yet. SAP script is still mostly used. I highly advise against changing the underlying program.
I have blog on certs. Unfortunately for some reason I can't paste anyting today on this keyboard. But you should be able to find it realitively easily.
Craig