I found there are commande line options :

-fullscreen
-network
-playback
-rotate
-settings
-user
-zoom

however, none of them seem to be working...

"-rotate=90 -fullscreen " will launch in full screen
-zoom=200 will launch zoomed in 200%.

Create a folder called "Screenshots" in the same folder as FixItFelixJr.exe.  Hitting F7 will create a screenshot (i believe they only come out right if it's rotated and in fullscreen).
Holding F6 will speed up the game.