for the most part, IE will not open a link in full screen, firefox will, you can click the link, then use the mouse to drag the corner to open to the size you want, (do not click the Max button, that is only temp and will not remember the setting) then hold the Ctr button and close the window, when you re-open a new window, IE should remember how you like it's size.
The easiset way is to use this little program. It's free (have I ever told anyone how I love free programs..LOL) It will do what you want, open the windows in full screen. Give it a try. http://www.jiisoft.com/iemaximizer/