Go to the following location where your saved profile is located e.g.
E:\Documents and Settings\UserName\My Documents\specnaz and then open the
"config.ini" file using any text editor.
Add the following line to the end of the file:

bindc +DIK_GRAVE (console_showhide)

Then, press ~ while playing to bring up the console. Enter sv_cheats 1 to enable
cheat mode, then enter one of the following codes at the console window to
activate the corresponding cheat function.

Code:............ Result:
game_godmode 1... God Mode
addammo all...... Ammo for All Weapons
addwpn #......... Get Desired Weapon
g_developer 1.... Developer Mode
cl_drawfps 1..... Show FPS
g_fly 1.......... Fly Mode
g_noclip 1....... No Clipping
map [name]....... Go to Map