Installation issues, Leopard Quad G5, 1.6.0 DMG

[Alex Zavatone]

Hi all.  I can't get past line 1 of the initial install instructions  
after installing the 1.6.0 MacPorts DMG.

Platform: Quad G5, 2G Ram, OS 10.5.2, Xcode 3.1, X11 2.1.1

When I enter the following into the terminal...

sudo port -d selfupdate

I get the following error message:
sudo: port: command not found

port is in the root:opt:local:bin directory

Is there some variable in some file that the installer missed?

Also, some of the docs say to use -d, others say -v. A little  
inconsistency there.

Thanks in advance,
- Alex Zavatone