What are the right sizes for a webpage to be printed on A4 size paper? What other stuff should be considered?
*inline CSS is preferred in this case
Clari
Like the other guys said you need to use a print CSS, but remember one thing:
display:none; //is your friend!
You can use this to make sure elements such as your navigation etc are not printed out.
By the way A List Apart has this great article on print stylesheets, check it out.