passing variables to subsequent pages

I have a two page search. The first page queries a database and creates a list of MANUFACTURERS from which the visitor can select all, one or multiple entries. The page is submitted via GET to the second page of the search. The second page uses the array of selected MANUFACTURERS to create a selectable list of MODELS from which the visitor can select all, one or multiple entries. This page is then submitted to the results page via GET. The problem is that to correctly query the database for results, I need to get the array of selected MANUFACTURERS to the results page. I'm using a SUBMIT button and don't know how to include this information in the URL being passed. Any suggestions? Thanx, -- Robb Kerr Digital IGUANA Helping Digital Artists Achieve their Dreams http://www.digitaliguana.com http://www.cancerreallysucks.org