Sending a file (.pdf) as an attachment via e-mail

Hi,

I have a selection screen with purchase order number as "select-options" and 2 radio buttons one for downloading and opening the SAP Script output to the local file and the other raido button would convert the SAP Script output into .pdf file and send that file as an attachment via e-mail to the receipent(only one).

I'm through with the first operation. Now need to know about the e-mailing procedure and the function module(s) to be used and their import, export, etc. parameters.

Thanks & Regards,

Rajesh