div content to print, and convert to pdf or msword

Hi, 

i want to create a invoice. i will fetch the data from sqlserver data base and with the data want to create an invoice with some default writings and want to format the alignments....  then to show the output invoice in a div to make user able to take print or convert to pdf or msword.

how to make the div printable in a4 size and how to enable user to save as pdf and msword. please help me.

Thank you