Harry
You really haven't given enough information for anyone to give you any kind of constructive answer. I mean all you've said is, "I can't download a large file, help me", which is nothing at all.
Read this link before re-writing your post:
http://www.gnutellaforums.com/genera...tml#post106828
and give us a description of your equipment, along the lines of this:
http://www.gnutellaforums.com/connec...-help-you.html
Just remember, that we do not know you from Adam therefore you have to give us enough info so we can help you.
UK Bob