Hi there, <BR><BR>i am trying to view a download dialog box when user clicks download file button. Problem is that another IE browser is created and windows media player tries to start the video file. I just want the file download dialog box to appear. <BR><BR>This is the first time i am using response.appendheader, so maybe there are several errors you can recognize here. My code following: <BR><BR>Response.Clear(); <BR>Response.ContentType = "video/x-ms-wmv"; //is this the right contenttype? <BR>Response.AppendHeader("Content-Length", fileInfo.Length.ToString()); <BR>Response.AppendHeader("Content-Disposition", "attachment; filename=" + fileInfo.Name); <BR>Response.WriteFile(fileInfo.FullName); <BR>Response.End(); <BR><BR>Any ideas or stuff on this? <BR>