=========Main class=====================================================

import net.minecraft.src.Block;
import net.minecraft.src.CreativeTabs;
import net.minecraft.src.Item;
import net.minecraft.src.ItemStack;
import net.minecraft.src.Material;
import net.minecraftforge.common.Configuration;
import net.minecraftforge.common.ForgeHooks;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.common.Property;
import cindylo.steelcraft.common.*;
import cpw.mods.fml.common.Mod;
import cpw.mods.fml.common.Mod.Init;
import cpw.mods.fml.common.Mod.Instance;
import cpw.mods.fml.common.Mod.PostInit;
import cpw.mods.fml.common.Mod.PreInit;
import cpw.mods.fml.common.SidedProxy;
import cpw.mods.fml.common.event.FMLInitializationEvent;
import cpw.mods.fml.common.event.FMLPostInitializationEvent;
import cpw.mods.fml.common.event.FMLPreInitializationEvent;
import cpw.mods.fml.common.network.NetworkMod;
import cpw.mods.fml.common.registry.GameRegistry;
import cpw.mods.fml.common.registry.LanguageRegistry;
import java.io.File;

@Mod(modid = "SteelCraft", name = "SteelCraft", version = "0.1a")
@NetworkMod(clientSideRequired = true, serverSideRequired = false)

public class mod_steelcraft {
public static BlockTitanium TitaniumBlock;
public static Configuration config;

@Instance("modid")
public static mod_steelcraft instance;

@SidedProxy(clientSide = "cindylo.steelcraft.client.ClientProxySC", serverSide = "cindylo.steelcraft.common.CommonProxySC")
public static CommonProxySC proxy;

@Init
public void load(FMLInitializationEvent event) {
}

@PreInit
public void loadConfiguration(FMLPreInitializationEvent evt){
	Configuration config = new Configuration(evt.getSuggestedConfigurationFile());
    config.load();
    Property TitaniumId = config.getBlock("titanium.id", cfg.TitaniumID);
    config.save();
    TitaniumBlock = new BlockTitanium(Integer.parseInt(TitaniumId.value));
    LanguageRegistry.addName(TitaniumBlock, "Titanium");
    GameRegistry.registerBlock(TitaniumBlock);
    proxy.registerRenderers();
    GameRegistry.registerWorldGenerator(new WorldGenSC());
	}

@PostInit
public static void postInit(FMLPostInitializationEvent event) {

}

}

======================config ID's==============================

package cindylo.steelcraft.common;

public class cfg {
	public static int TitaniumID = 500;
}