I just right click to go to page properties and use the background tab,
browse to my files and insert the picture that I would like to use as
background.
The height and width of the picture is measured in pixels eg 800 wide and
600 high would fit a screen resolution 800x600.
So....what size is your picture that you're asking about?
in Windows explorer, right click the picture and select "Properties" - this
should tell you the dimensions approximately.
No it would not.
An image 760x425 px would be a better fit. Do not forget to allow for
the scroll bar and menu and tool bars (and the toolbar setup will vary
from browser to browser, user to user.