How to use the patch

   1.Get the updated Tomb Raider 3 executable from www.tombraider3.net/tr3_fixes.html, and move it to your Tomb Raider 3 directory as instructed. 
   2.Put tr3flight.exe in the same directory as the Tomb Raider executable, and run it. When prompted, press a key that you haven't assigned to any other function in
     the game. 
   3.Run tomb3cheat.exe, which was created in the previous step. To enter the cheat mode, press the key you chose earlier. To return to normal, press the "walk" key
     (Shift by default).

Thanks to Ben Rudiak-Gould for this great patch.
(http://www.math.berkeley.edu/~benrg/tr3flight.html)