designing printable bill

i am designing an accounts package for a certain company, and i have to design the bill as per requirements. this application is not web-based. what i have to do is to make the bill printable. i should have a print option in the bill and it will print the bill. i have no idea how to add that functionality. can anybody please tell me the logic or if possible, post me a sample code??
thanx in advance.

re: designing printable bill

Have you tried the MSDN?

A quick search took me right to the page with a code snippet for printing