Getting List of Accept Headers in ASP.Net

Question

When I am using Request.AcceptHeaders method I always get only one element Array which is */* As Follows string[] types = Request.AcceptTypes; for(int z=0;z< types.Length;z++) { Response.Write("
Type===" + types[z]); } I wan to know what all Applications (Word, Acrobat Reader etc) are installed on the client machine(Browser) so that I can set the correct Headers while sending The Response.