How do I put cheats in GTA 4?

There are Cheat Codes for Grand Theft Auto on PC. The phone number for Max Health, Armor and Ammo is 485-505-0100. Weapons 1 can be reached at 485-555-0150. Weapons 2 can be reached at 485-555-00. You can remove the wanted level by calling 267-555-0100. Call 267-555-0150 to raise the wanted level. You can change the weather by dialing 468-555-0100.