Installing Downloaded Packages
STEP Tools packages are distributed as ZIP files or Microsoft MSI installers. On most versions of Windows, you should be able to double click on the MSI file and the installer will launch. However, you may occasionally encounter the following issues.
.NET Framework Install
STEP-NC Machine and some other STEP Tools applications use the Microsoft .NET Framework 2.0. If this Windows component is not already present on your machine, you will need to download and install it before the application will run.
For 64bit and other platforms, consult the Microsoft site directly
.NET Framework 2.0 (x86) 22.9mb [microsoft.com] [local]
Windows Installer Problems
If you have an older machine, it may not recognize the *.msi extension, or it may pop up a message that says "This installation package cannot be installed by the Windows Installer service". If either of these happen, install the upgrade below. Then your machine will be able to handle Windows MSI 2.0 packages.
The links below point to the Microsoft site. In case they decide to reorganize their download links, we have also provided a mirror of the update.
MSI 2.0 update WinNT/2000 1.8mb [microsoft.com] [local] Win9x/ME 1.7mb [microsoft.com] [local]
Unpacking Zip Files
Some STEP Tools files are distributed in ZIP archives. As of Windows XP, ZIP support is built into the operating system. Older systems will need a separate unzip program.
Chances are, you already have an unzip program already on your system, but if not, you can get one at the following places or search for more options!
unzip http://www.info-zip.org/ Free, all platforms, command-line or GUI versions, source code. WinZip http://www.winzip.com/ Commercial, Windows, evals available. PKZIP http://www.pkware.com/ Commercial, Windows, evals available.