which exact version of 4 ?. I would
strongly recommend you do not use anything below 6.1, as a matter of fact many of us are using 6.2 even though it is not currently supported.
Any version of Freebsd 4.x (even ones supported by Cpanel) are going to cause you problems and your ability to use ports is going to get next to impossible as time passes.
As to installation, you should do it the other way as per the install docs:
To install cPanel and WHM
Make sure you are logged in as root.
# cd /home
# wget http://layer1.cpanel.net/latest
# sh latest
The installer has now started, and will take between 30 and 60 minutes depending on your machine. If you are asked any questions press the Enter key, or q if there is no default. After the installation is complete, you need to setup WebHost Manager - refer to Logging on for the First Time for more information.
NOTE: You must be on a stable internet connect to install cPanel. If your shell session disconnects during the installation of cPanel, the installation will be aborted. You can restart the installation by using "sh latest" again however, we recommend reformatting your machine and starting over to ensure there are no problems with the installation.
If you run "wget" and it doesnt work because you do not have a wget you have to :
cd /usr/ports/ftp/wget
make install
But as I said, I do
not recomend doing this with any 4.x version as you will be setting yourself up for
disaster in the not too distant future.