MacPorts missing Directories

[Sam Cook]

Hello--

The Facts: I am using an intel MacBook with OS X 10.5.2. I am new to  
MacPorts. I recently downloaded MacPorts-1.6.0-10.5-Leopard.dmg. I  
still have not (third try) been able get MacPorts to install  
correctly. In particular, the directories

/Applictions/MacPorts
/Library/LaunchDaemons/org.macports.*
and
/etc/X11/xinit/xinitrc

do not exist.

The History: The first time I tried to install MacPorts, my .profile  
was not modified. I did it, and I also tried to modify /etc/X11/xinit/ 
xinitrc, which is when I noticed it isn't there. However, X11 did  
create /usr/X11/lib/X11/xinit/xinitrc when I installed it.

Then I reran the installer. Progress, as the port command was now  
recognized. I tried to install my first port, gv 3.6.3. It did not  
work; it installed, but when I tried to execute the gv command, it  
would not run.

I tried the whole process over. Now, MacPorts seems to be working, and  
so is gv! But the three directories listed above are still absent. Any  
advice?

Thanks,

Sam