integrating desktop program in c# with web pages / html

Question

We have developed a client application which captures the screen and saves the screenshot somewhere. The program to achieve this is created in C# and it runs well as a desktop program, i.e. locally. Now we want to integrate the same program in a webpage so we can run it across our servers for our clients. So, what we essentially need is... 1. this program gets automatically installed after giving due warnings on the client computer (as it happens with macromedia flash etc) 2. We are able to initiate this program from the webpage. How to achieve this? Right now we are trying to create dll and call it from html but facing problems while finding out the classid of the dll we created and registered. Which is the right way to find out the classid for the registered dll, or is there any other way to achieve the same? Also, if you want to review the code, you can find it at http://www.manojoswal.com/code/capture_download.zip It's a zip file which you need to extract to review the code. Can anyone guide me in this? Thanks in advance Manoj Oswal