The latest build of C1Command (.NET 2.0 version) can be downloaded here:
http://download3.componentone.com/pub/Net/c1command/misc/C1.Win.C1Command.2_2.0.20071.19105.zip
The readme file for that build is attached.
PLEASE NOTE: Starting with build 2.0.20071.19104, the C1NavBar object model has been changed in a backwards-incompatible way. If you are using C1NavBar, you will HAVE to manually edit your InitializeComponent methods and/or your runtime code. For complete details please see the attached readme.