Using Frameset in asp.net 2.0

Question

Hi All,
I am developing one application where user will select some values and click on generate button.as soon as user clicks on generate button the 3DPdf image will get display on other frame.but my problem is there is no frameset available in .net 2.0 currently in my application user is selecting the criteria for drawing and click on generate button and that 3DPdf image is get displayed on other page. but i don't want it to get open on other page i want that it should get open on same page in a different frame.so it will become more user friendly.please tell me that how can i do so.