InfoPath Dev

Is there a way to pass parameters into an InfoPath FormControl hosted in a WinForms/WPF application the way they can be passed via a URL and the command line? Our forms depend on parameters passed to them on startup to execute a custom data connection to pre-populate them, but the control does not appear...

I'm currently working on an InfoPath form, for one section of which I need to include a folder browser dialog. Since this isn't included in the standard control list I'm trying to create one. I'm working with Visual Studio 2008 & InfoPath2003 (SP3) - This is the company's preferred...