Kak se izvikva download window na IE za download na tochno opredelen file(dinamichno sydavan)?

triabva da prati6 saotvetnite headers na browsera i sled tova da mu prati6 faila i si gotov

A tochno koi headers da mu pratia i kyde ima hubava documentatsia za Headers?
V momenta mu prashtam Content-type, Content-Disposition i toi bez problem mi izvikva Download window, no bez filter za file-type i s imato na asp stranitsata :(

mislia 4e ima gotovo re6enie i opisanie na asp101.com

Response.ContectType = "application/x-gzip
Response.AddHeader "Content-disposition", "attachment; filename=whatever.zip"

Целта оправдава средствата