The command ifconfig is not working in XWindows. Under any user. If I switch to full text view under root I can run this command but not in XWindows terminal. Did I set something wrong on installation and how can I get these commands to work.

They're not in your user's PATH -- either add /sbin to your PATH or give the full path to the command, /sbin/ifconfig. You're probably bewcoming root by doing "su", but if you do "su -" instead you'll inherit root's environment, which will have /sbin in its PATH.

I set the Path that you said to the PATH variable and it worked thanks!

When you are trying to use a command and it is not working, these cli tools are handy.

whereis <command> : should return the location of the command
which <command> : returns the location attached to the command
locate <name> : is a rather quick find (not necesarily)

of course, using these outputs along with know what is in your PATH variable should give you a clue to finding a solution.

The examples i gave are the short short short version, you would do better reading the man pages on them to understand better what they do