I ran into the same problem with this excellent, no-brainer software that installs flawlessly and easily in a matter of minutes.
That being said, check if the following directory exists on your server:
C:\Program Files\HP\RemoteSupport\config
In this directory, there are lots of files that are referenced from .bat files elswehere in the installation tree and they are used to configure SIM. This directory was not there on my server (I don't know why).
To reinstall it, I ended up locating iseeClient.msi under C:\Program Files\HP\SWMAgent\.marimba\ISEE_CMS_SWMAGENT,and re-ran the installation from there on the console. However I ran if from Wise MSI Editor, don't know if it helped or not. Lots of DOS boxes poped-up, and RSP appeared automagically in the SIM menu.
Good luck