Registering an assembly allows COM clients to create .NET Framework classes. Information about the class is read in by the tool and added to the registry. This then allows COM clients to interact with the .NET class as though it were a native COM class. This process can only occur on assemblies which are installed on the machine. 

User interface

Regasm options

Assembly

Assembly

The assembly file that will be registered with COM.

RegAsm Mode

Register assembly

Performs the registration of the assembly so that COM clients can interact with classes it contains.  

Unregister assembly

Performs the de-registration of the assembly. Once this is performed COM clients will no longer be able to access classes the assembly contains. 

Generate reg file

Performs the registration, however saves the resulting entries into a reg file. This can then be applied at a later date, or to another machine. 

Generate and register type library

Builds a type library reference file. The file will contain all the definitions required for accessing classes and types defined in the assembly. 

Options

Create a codebase entry in the registry

Suppress the Microsoft startup banner

Only refer to already registered type libraries

Suppress success messages

Verbose output

Framework version

Use default Framework version (vX.X) / Use vX.X

Allows the selection of the .NET version to use for NGen. The minimum is .NET v2.0.

Use 64-bit tools

This options specifies as whether to force the usage of 64-bit tools on a 64-bit system or not.  As FinalBuilder is currently a 32-bit application it will default to running the 32-bit version on a 64-bit system.  Check this option if you require the 64-bit version to be run.