POST Query String

Hi, I was wondering if it's possible to retrieve the entire Posted string as 1 string before it gets into $HTTP_POST_VARS array? For example - In ASP, I can go Request.QueryString and it will return me the entire posted string , or I can index it to get a particular Name/Value pair out. The reason for this is - we have an application where we are posting XML data to web pages. There isn't a Name/Value pair as such. I am just posting pure XML data to a web page. When the receiving web page gets the data and I try to use $HTTP_POST_VARS, it tries to split the data into name value pairs, so I end up with Name: <?xml_version Value 1.0?><ELEMENT><...></ELEMENT> I would like it to just be 1 query string, rather than being parsed into the HTTP_POST_VARS array. The Content-Type is going to be text/xml , and even if it wasn't and we used HTTP_RAW_POST_VARS, this server variable still acts the same was as HTTP_POST_VARS and tries to put the receiving data into a name/value pair array. Is there a server variable at all that I can use? I have been looking around at all the available server variables but can't find anything that will give me the entire posted string. Thanks, Sam