Apple Logic Pro /LogicExpress Discussion

This is a very basic question, but one that has stumped me for several years!
(Using Express 6)   On my arrange page I have 3 audio tracks.  I want to create a 4th.  So I 
go to functions and create a 4th track. I can't get it to be any different than the 3rd track. 
If I change the 3rd it changes the 4th also.  If I change the 4th it changes the 3rd also.  I 
can't "make it" the 4th track because only 3 tracks are listed.  I suspect I have removed 13 
tracks from the environment somehow (because it only shows 3 in the dreaded 
environment window, and I don't know how to create a 4th one in that window.  Over the 
last 2 years i have probably wasted 12 hours of my time trying to figure this out and I am 
no further ahead to this day.  Why it has to be so complicated I do not know either.
I have read the manual .  To create a track you create a track - thanks!!.  Very helpful.
HELP!!!!!