Making a peripheral (Questions)

package peripheral.common;

import net.minecraft.src.Block;
import net.minecraft.src.CreativeTabs;
import net.minecraft.src.Material;
import net.minecraft.src.TileEntity;

import java.io.PrintStream;
import java.util.ArrayList;
import java.util.List;

import dan200.computer.api.IComputerAccess;
import net.minecraft.src.World;

public class BlockPeripheralBlock extends Block
{
	public BlockPeripheralBlock(int id, int texture)
	{
		super(id, texture, Material.cloth);
		this.setCreativeTab(CreativeTabs.tabBlock);
	}

}

package peripheral.common;

import java.util.ArrayList;
import java.util.List;

import net.minecraft.src.TileEntity;
import dan200.computer.api.IComputerAccess;
import dan200.computer.api.IPeripheral;

public class TileEntityPeripheral extends TileEntity implements IPeripheral
{
	IComputerAccess computers = null;

	public String getType()
	{
		return "Peripheral";
	}
	
	
	public String[] getMethodNames()
	{
		return new String[] { "getBlockId", "setBlockId" };
	}

	public Object[] callMethod(IComputerAccess computer, int method, Object[] arguments)
	{
		if (method == 0)
		{
			System.out.println("Called 1");
		} else if (method == 1) {
			System.out.println("Called 2");
		}

		return null;
	}
	
  
	public boolean canAttachToSide(int side)
	{
		return true;

	}
	
	public void attach(IComputerAccess computer, String computerSide)
	{
	}
	
	public void detach(IComputerAccess computer)
	{
	}
}

package peripheral.common;

import net.minecraft.src.Block;
import net.minecraft.src.TileEntity;
import cpw.mods.fml.common.Mod;
import cpw.mods.fml.common.Mod.Init;
import cpw.mods.fml.common.event.FMLInitializationEvent;
import cpw.mods.fml.common.network.NetworkMod;
import cpw.mods.fml.common.registry.GameRegistry;
import cpw.mods.fml.common.registry.LanguageRegistry;

@Mod(modid = "Peripheral", name = "Peripheral", version = "1.0")
@NetworkMod(clientSideRequired = true, serverSideRequired = false)
public class peripheral
{
	public static Block peripheralBlock;
	
	@Mod.Instance("Peripheral")
	public static Object instance;
	@Init
	public void load(FMLInitializationEvent event)
	{
		GameRegistry.registerTileEntity(TileEntityPeripheral.class, "TileEntityPeripheral");
		peripheralBlock = new BlockPeripheralBlock(250, 0).setBlockName("peripheralBlock");
		GameRegistry.registerBlock(peripheralBlock);
		LanguageRegistry.addName(peripheralBlock, "Peripheral Block");
	}
}