Big Money & Better Weapons
Go into the guns.ini in the data folder of the game's directory. 

Once in, change all the gun prices to -999999. Make sure that you change all
the guns to the same price! 

Then start game, select tournament mode {go through choices until you get to 
the Manage Team screen} pick one player and accept. Then go to the Buy New 
Equipment screen. Then go to the Markers screen and buy any gun and you will 
recieve the diffence in cash back. Do this for each player you select for your 
team. 

Also, if you want to switch to another gun later on, it should cost you zero 
dollars. Now, for the guns: while in the guns.ini, you can adjust the settings 
of each gun. The spin velocity, muzzle velocity, shots per second, reload 
quantity, air, auto, and scope {play around with numbers until you "tweak" your 
gun the way you want it}. Example: If you change the "0" to a "1" on the "auto"
line, it will make that gun fully auto. 

Note: you can't have auto and grenade on the same gun. It could lock up the
program or you won't be able to shoot anything---paintballs or grenades.