quote: I want more space between the text and the paper ends, i.e. I want more margins.
Well, like Richard said, this can be controlled by your browser settings, however if you feel that you need to increase the margins to more than the default for all your users, then you'll have to edit the code for that file.
You would need to edit the body tag, which is in the inc_top_short.asp. Seeing as that would affect a lot of stuff, you'd be better off deleting that include statement from the pop_printer_friendly.asp file and replacing it with the contents from the inc_top_short.asp file. Then you would modify the body tag to what you see here and this would give you margins set to 10 all around:
The above would be found at about line 65 in inc_top_short.asp.
I don't really know if it's necessary or not to do this. I think most people have a decent margin setup for their browser. I haven't noticed any complaints about it here.