InetTransferLib Http download problem with zip files

[Owen Jenkins]

I've been using Dev's fantastic InetTransferLib to upload and download
files via ftp. Now I'm using the http procedures to have my application
download zip files from my website. Although the download process works
OK, it adds a few bytes to the file during the download, so a 46k file
becomes 52k. I can still open the file using Winzip, but cannot open it
using my active X extraction system (ActiveXZip from www.hdse.com). I
get an error 'Bad file format'. This is effectively stopping me using
the ActiveX unzipping process which I need to build into my application
to allow clients to download and install files from my website.

I've tried the same process using ftp and the same thing happens. If I
download using a browser, the file is transferred with no extra bytes
and unzips perfectly using Winzip or ActiveXZip.

Anyone know what could be happening during the download to modify the
zip file? And how to fix it of course.

Owen Jenkins