VMRCplus has a very straightforward installation process. If you do not want to change the location of VMRCplus, you only have two options left. Either you use the defaults or you add the Virtual Server COM object (VSCOMAPI).
The default installation (meaning you leave everything default by clicking Next) results in a local installation of VMRCplus without the Virtual Server COM object. This type is meant for a local installation on a Virtual Server host. Virtual Server already registered the COM object so you should not (must not) install it through VMRCplus.
If you want to remotely manage Virtual Server AND you do not have Virtual Server installed on the machine you install VMRCplus on, you must install VSCOMAPI. If you don't, you will get the message that the COM object could not be found.
VMRCplus exists in two packages for two platform architectures; an x86-package for 32-bit operating systems and an x64-package for 64-bit operating systems. The x64-package is for x64 (AMD64); there is no support for IA64 (as there is also no support for IA64 by Virtual Server).
Although you might expect the x86-package to work on x64, it won't. It allows you to install however which is fixed in a newer build.
So always install the x64-package on x64 architecture.