What is the easiest way to upgrade a harddrive with all itś contents?

The situation is that my current drive is nearly full, so I will be getting a bigger drive.
I don´t to do a reinstall, configuration of the OS again as it has taken a long time for the current setup.

Is there some command where I can plug the new drive into slave and clone the current drive completly including the boot sector. So when I replace the current drive with the new drive things will be the same except for the larger space?

Thanks
PS, I know this is very ungeeky, but I don´t have the time to read tons of README and RTFM type suggestions. So Yes I would like a simple do A then B type answer. Sorry and thanks.

Ya, hook the New drive as a slave to an open IDE controller and then mount it, then use the "cp" command.........example R=recursive a=attributes v=verbose

cp will get all the files but it won't get the boot records. You could use either the cat command or the dd command. They'd both be equally effective and get the entire disk, not just the files