setup has encountered a problem during download

Anytime I try to download a file (such as netscape 7, or
adobe acrobat reader)I get the following error, "setup
has encountered a network problem and has paused the
download. If you have just lost your network connection,
please click resume once your network has been re-
established". I am using windows 2000 for my home
computer and am not networking. I copied the install for
netscape 7 to my harddrive but when I try to run it it
gives me this error. I would appreciate any help. Thanks,

Rich..