Greg, parameter passing in links is not language dependent. All server side languages (such as php, asp, and several others) are capable of compiling HTML code that is compliant with the W3C Consortium standards. It is these standards for HTML that specify the attribute set for all tags and parameters can be passed as attributes of the <a> tag, which causes the link to an external or internal URL.
Apparently the parameters that cause the specific data set pulled from their database for display on a page are passed as hidden form variables, rather than as part of the URL. The parameters are generated only from a page hosted on that server so there is no way for you to pass any variables from an external location to that website.