Hi Norman - because the forum you originally posted in is for beginners trying to learn the basics of Photoshop, I moved your question to the Photoshop General Discussion forum, where you'll get more specialized help.
To help others help you, please read through this article and provide any additional relevant details.
What problems are you having when printing?
Photoshop CS5 has several patches available. You should not be on 12.0.0.
Thank you. You say I should not be on 12.0. What then is the answer? Does
this mean I have to fork out further on a programme that is otherwise
No, you need to install the updates to 12.0.4.