Passing a Variable into a URL link - is is possible?

I’ve been assigned to make an application like this link…

http://www.porsche.com/all/comparemodels/Select.aspx

Except with flash. So far - no luck in finding how this is done in flash. I’m thinking they used .aspx because flash can’t pass variables into dynamic links (at least that I’ve found). Is it possible to add 3 variables depending on which option is choosen at the end of a URL like “id1=this” to an existing html link button. Sorry if this is confusing. Basically - is it possible to make the link above “comparison chart” happen in flash? Thanks for the help!