ASPX Header.

I have a custom pre-built aspx header that is built and working right now. I need to have someone convert my current asp page into aspx and get my new aspx header to function in it. This should be a fairly easy and straight forward job. Previously I have wanted search functionality but I will post a second project for that. Right now I need to have this header incorporated and I need you to change out a graphic. I will also need you to show me the line of code to do this. in classic asp i just called a include file but this does not seem to work in aspx. I need this done right away. Today. I need you to work with me over IM, phone, whatever it takes to complete this job. I need you to work until the job is complete.