Thank you for your suggestions, and clear example. Also for taking the time to detail the different methods. I will be honest, I am not sure what is the correct way to program with the TCL/TK format as you point out. I am only using the Example from the TKDoc link

http://www.tkdocs.com/tutorial/firstexample.html

however, I do have the "Introducing Perl/TK" book coming soon via mail. Yet, I am totally lost as to use Tk or Tkx - the syntax does appear to be different. What method do you recommend?