How to use wkhtmltopdf.exe in ASP.net

After 10 hours and trying 4 other HTML to PDF tools I'm about ready to explode.

wkhtmltopdf sounds like an excellent solution...the problem is that I can't execute a process with enough permissions from asp.net so...

Process.Start("wkhtmltopdf.exe","http://www.google.com google.pdf");

starts but doesn't do anything.

Is there an easy way to either:

-a) allow asp.net to start processes (that can actually do something) or
-b) compile/wrap/whatever wkhtmltopdf.exe into somthing I can use from C# like this: WkHtmlToPdf.Save("http://www.google.com", "google.pdf");