form post and files

I am trying to get a page that simulates a form post to another script. I have found several classes to help me do this and they work great except that I also need to be able to post a file to the script my http class is currently able to handle both regular form post and multipart/form-data post, but I am not sure how to include the binary file in the post request. Currently I am just reading the contents of the file into a string and appending that in the right place in the post request. It doesn't appear to be working though. Following is the request being passed to the socket. Thanks Andy Worthington POST /video/stills_upload.php3 HTTP/1.0 User-Agent: Manuel Lemos HTTP class test script Pragma: no-cache Content-type: multipart/form-data; boundary=----6a806b2d4c32ebcbafb56811df8c21f9---- Content-length: 717 Host: localhost ----6a806b2d4c32ebcbafb56811df8c21f9---- Content-Disposition: form-data; name="show_name" sunset ----6a806b2d4c32ebcbafb56811df8c21f9---- Content-Disposition: form-data; name="episode_number" 37 ----6a806b2d4c32ebcbafb56811df8c21f9---- Content-Disposition: form-data; name="stills" filename="/home/ap_admin/bgcolor01.gif" Content-Type: image/gif Transfer-Encoding: binary GIF89a$