IE10 pre release version windows 7 prompts me to open or save a html file

Hi, I have an application which implements a search feature using a post request. When the search results are returned with a header (Content-Type:text/html) IE10  prompts me to open or save the file. When I choose to open the file,I am prompted to choose an application to open the file and when I decided to open it with notepad, the file is populated with the html markup. I am using java sockets to write the content to the browser. I also use a header<meta http-equiv="X-UA-Compatible" content="IE=8"/> .Could someone suggest a workaround to open the page normally please.

Thanks