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.
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