2 dumb questions

[Scott S. Jones D.C.]

I am installing QT 3.0.3. The question is about environment variables, so 
please, no 'Take the question to the QT folks' comments. 

In order for this to be set up and run correctly, I have to set up 4 
variables in my .profile. 

After inserting the lines in /home/scott/.profile, and double checking them 
for accuracy, and rebooting my machine, I run $echo $QTDIR and get a reply 
that the variable is in /usr/lib/qt2, however when I made the entry in 
.profile I told it to look in /usr/local/qt instead. 

Where else could this be set, causing echo to report the wrong location for 
this variable? What other files would hold this information? 

Scott