CURL and ASP

Hi, ALL,
Is anybody working or use to work with libcurl that needed connection to ASP site?

I have a very interesting situation.
I have an ASP-based service that is running on the web site. I need to make a connection to it send the file to it using POST and get the result from the site. And I need to do it using libcurl.

I made it work using curl command line interface. I also made it work partially using libcurl.
However what does not work is reading the response back to my program.

Is it possible to interfere with the getting result from libcurl post request?

Thank you.