Installation issue

[Adolfo Gonzalez]

Hi there, I've tried to install from Internet but during the process I get
across choosing a mirror, after I choose it it takes me to a screen with a
title "choose a mirror of the debian archive" in. which I'm ask to enter
"HTTP proxy information (blank for none)", since I'm using a Wi-Fi
connection and haven,t got a clue what information is that I leave it blank
but, it always shows me a "bad archive mirror", please HELP
Adolfo Gonzalez