You can replace the '&' where it occurs in the arguments with %26 and it will be turned back into '&' when the url is processed.

I think doing this is similar to doing < > in HTML. It's a way of passing in the ampersand character to a CGI argument without it being interpreted as a parameter-breaker. If you make a form with a couple of fields with a GET method, and enter in strings like "this & that" and "97% off" and watch the URL in the browser, you'll see the & in "this & that" get turned into the %26. (I think :) I think the real thing to do is to use & in URLs. I know that some older versions of Netscape Navigator had problems with this though (I can't remember if they had problems if you used & in URLs or just the & on its own. I only remember shaking my head in grief).