for these keywords "screenshot of web site" you will get some results leading you to free products that can accomplish what you are looking for.
Thanks for all the answers to my queries. Now i want to take the complete picture of my site. I did tried it but it only gives me the half of the image of my site. I want the full image of my site, can you please advice me to do this.
I am thinking it to publish the picture in my book. Please help me.