An enhanced telephone emulation computer system including a minidialer program for controlling a computer to add telephony functions which can be invoked from whatever active program is currently controlling the computer. The minidialer program controls the computer to alter its processing depending upon the context existing at the time when a mouse click or hot key combination event is detected indicating the user wishes to invoke a telephony function. The minidialer program determines whether the user has highlighted any text or numbers in the active window of the application currently controlling the computer and whether the highlighted material is a name or a phone number, and if a name, whether the name is stored with a phone number in a phone book or file maintained on the computer. Processing and telephony menu options displayed as available also depend upon whether the user is or is not on the phone at the time the mouse click or hot key event occurs. In some embodiments, if the user has highlighted a URL, a browser will be launched and the web page corresponding to the URL will be opened.