Please contact EON Entertainment's customer support via the official Z: Steel Soldiers web site at http://www.zsteelsoldiers.com/ or refer to the manual for technical support contact details.
If you are looking for the latest patches please go to our Downloads page here.
For the Z: Steel Soldiers guide see below. There is a general guide on the first page then walkthroughs and hints for each level in single player.
Bitmap Brother pages
Official Z: Steel Soldiers Site
Z: Steel Soldiers
EON Digital Entertainment