These are the things I would check:


1) do a "whereis startx" to determine the path to the startx script.


2) type the entire path to the startx script and see if it responds correctly


3) If #2 works correctly then you need to add the path of the script to you path and/or type the full path each time. If however it did not start from #2 then go to #4


4) Change to the directory that the startx script is in. Perform "ls -la".
Make sure that the file is executable by you ( who you are logged in as ), it should be something to the affect

"-rwxr-xr-x" if not then you need to change it accordingly using the following command( as root and in the directory where the startx script resides ) "chmod 755 startx"

"command not found" seems a $PATH problem. Check it.


"startx" must be written in lower case.