URL Routing and Request Object

I have implemented some URL Routing as described on this page on MSDN http://msdn.microsoft.com/en-us/library/cc668202.aspx
I am only using one route that send everything to one page which will then work out what content needs to be displayed.
Route Code is:
routes.Add("DefaultRoute", new System.Web.Routing.Route("{*pagePath}", new CustomRouteHandler("~/default.aspx")));
The path is then retrieved using Context.Items["pagePath"] to work out what is needed to be displayed.


As the url will also contain querystring values e.g. www.mysite.com/form/category/1/page/3/ is there a way for me to extend the Request object so in this example you could still do Request["page"] and get the value back?


Thanks
Tim


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