Any particular reason you chose to use this GRIG program
when there are so many (dozens) of other superior (and easy to install)
rig control programs out there? What brand/model radio do you
want to control? What is your computer & OS?
Since you say you are not computer literate, this program is probably
not a good choice. Just looking it over quickly, it appears feature limited and cludgy.
There are lots of self extracting rig control programs, for
just about any rig, some specifically for certain rigs, most free.
Sorry that this does not answer your installaion questions.
BUT, GRIG does offer a User Mailing List for people to post
questions to members:https://lists.sourceforge.net/lists/listinfo/groundstation-user