You can use the Key or KeyPress descriptor and bind it to an event just like a button. Just eval the input to a system call. I technically think that Tk may be a bad method to accomplish what you are trying to do.. It would probably be a better Idea to install Apache and run it through a web page via CGI using passwork protection. If you need help with the Syntax.. http://www.foo.be/docs/tpj/issues/vol2_3/tpj0203-0006.html