Sturdy Environment Variables on Mini2440

Hello dear Community,

im trying hard to get own progs running on my Mini2440 with Qtopia. I think
my ToolChain for Qt Creator is working but i 've problems to configure
Environment Variables as explained here: 

http://mini2440vietnam.blogspot.de/2011/04/upgrade-qt462-in-mini2440.html

like this:

export LD_LIBRARY_PATH=/usr/local/tslib/lib
export QTDIR=/usr/local/Qt                 
export QWS_MOUSE_PROTO=tslib:/dev/input/event0
...

When i add this lines to /etc/profile the Variables will not change. 
Somehow though they are defined anywhere else. For example LD_LIBRARY_PATH
is /opt/Qtopia/lib:/usr/local/lib:

Since Start Qt 4.6.3 was preinstalled and working, I assumed that the
library and so on is already installed, so i didnt configure it on my own
but i recognized, that the environment variables are missing. So if i try
to run a simple hello world app it will give errors like "cant find
library". When I enter each variable on my own by hand, the application
will start...

Does anyone know, where i have to change the environment variables or why
its not working with the /etc/profile ?
Im noob, so plz consider while answering ;)

Just in case nobody understands what my problem is:

When i add 

export LD_LIBRARY_PATH=/bla/bla/bla

to my /etc/profile, the path won't be changed when i start a terminal. Can
anybody tell me where i have to put this exports commands?
Is profile the same like bashrc?

Sorry for double-posting.

I think depends on how Busybox is set up.  On the early 2.6.32 FriendlyArm
you put stuff like this in /etc/initd/rcS.  In the Pengutronix BSP they go
in /etc/profile.environment.

I suspect there is somewhere that specifies what init files are run.