Datetime function

Dec 29 2011 5:55 AM

Hi
I have One BOOK Published On 1/1/2010
I have to add 35days after the book pubdate which is less than GETDATE()
Plz help me how to write date time function for this
Thanks

Actually i want datetime function for this statement
ALL past due customers that have a balance on at least one contracts that is 35 days after the pub date.
or else plz write datetime function for the above question