I don't understand your problems, buddy. WinLinMac explained it perfectly correct

This is how you type, exactly the same like the bold font:

Step 3:
cd /usr/standalone/i386

cd means change dir, so you use this command to switch to the i386 dir,
which is located at /usr/standalone. That's one of the most simple unix commands, easy, isn't it?

Now to Step 4:
dd if=./guid/boot1h of=/dev/rdiskXsY bs=512 count=1

The underlined part (rdiskXsY), must be replaced by X and Y with X as the disk number and Y as the partition number on which you installed Leopard)

In my case, for exampe, rdisk1s1!

You can check the numbers in the Dvd by using the Disk Utility.

In the following commands you will also have to replace diskX and diskXsY.

Best Wishes