Different Weapons and First Aids:
 While you're in the game and you have blown the CRAP 
 out of each other and you're low on health or ya need 
 a different weapon, just push (ALT+TAB) and it will 
 miniimize it. Now if you want you can pusn (ALT+TAB) 
 again or you can use the mouse and click on the minimized 
 game on the tool bar on the bottom of your desktop, now 
 all you have to do is keep doing that over, and over and 
 soon enough you will start getting different weapons and