asp.net component for HTML to PDF conversion

Hi, I need a .NET component that knows to convert HTML text with external css references and with inline styles. this will have 2 main public functions: 1. ConvertHTMLtoPDF(string htmlText) - returns PDF stream 2. ConvertURLtoPDF(string URL) - loads the URL and outputs the whole page as PDF. This needs to be able to compile to a single DLL. If you can't make it into a single DLL i may consider including 1 additional external dependency DLL. Prefferable to be a native .NET component. Has to be 100% legal and original!! If you apply, please elaborate on how you intend to accomplish this task. Thanks!