InfoPath Dev

I have an ASP.NET webpage that opens Infopath forms from a Sharepoint Site.  All it is doing is linking directly to the folder where Sharepoint stores all the xml files.  What I am looking to do is pass in parameters to a new Infopath form.  I know there is some functionality with the eventObj.XDocument.InputParameters.  Does anyone have a simple solution to pass in parameters to a form or set a field when i open that form from C# in my ASP.Net web page.  Thanks for any replies 

I figured it out.  The way I am doing it is passing the parameters in from the url.  For example, From my asp.net webpage i would run something like http://server/SharePointSite/Forms/template.xsn?test=Parameter1.  In my IP code i just called the InputParameters with name test and get the value of it.