Generate Output Type on 'SAVE' in VA01/VA02 & create its PDF document

Hi Experts,

I have a requirement to generate an Output type(Print Output) automatically when a Sales Order is saved in VA01/VA02.This layout has to be converted into a pdf and send as an attachment in a mail to a particular email-id.

My questions are:

1. How do we generate the Output Type automatically on 'SAVE' in VA01/VA02 (Not through 'Issue Output to')?

2. How do we convert this layout  to a pdf document automatically?

Thanks in advance,

Regards,

Blessy