Hi,
Using ASP I want to print a html page, several pages of this kind are printed in a loop. programatically i want to set printer so that it prints back to back pages(Duplex Setting). Can any one tell me how to do this in ASP.

You can't do that. It's a client setting specific to the browser and printer installed on the local machine.

following is the link to set printer for duplex printing.

http://support.microsoft.com/kb/230743/en-us

When i am printing the html page. it is not able to print data which is fetched dynamically from server side. it is able to print static html page. I am not able to reslove this issue.