Custom output type for a custom smartform - How?

Hi,

I am building a custom smartform and print program.

The print-program/module-pool will be triggered from a custom screen.

How do I do the following in regards to this custom (non-standard) transaction & process?

- Create a custom output type

- Assign it to the forms, print program/module pool, screens and transaction

The biggest benefit to creating this output type, is probably the fact that I will

be able to configure immediate printing and etc. What other benefits are there, in regards

to creating a custom output type to this custom process?

Please suggest and help.