So is your question how do you create the link or how do you process the data (i.e. from the GET method) that you received?
the GET method passes data in the URL. Anything after the question mark (?) is part of the GET method parameters and will become part of the superglobal array of $_GET with the index being the variable name.
Variables in the URL are then separated by the ampersand symbol (&)
so in http://www.helpme.com/howtomakethislink … ows&id=221
the howtomakethislink.php script would be able to access the variables of action and id by using the superglobal of $_GET[‘action’] and $_GET[‘id’] which would contain the values of show and 221 respectively.
Once accessed the script of howtomakethislink.php could then process them as the programmer (presumably you) feels fit to process them.
Indeed you might want to take a look at http://nl2.php.net/variables.predefined (the Superglobals) for more information.
If I totally missed the point, then I am sorry.