Hi and welcome!
Does this entry in the FAQ help?
Something like the following should install to "C:\Ruby191-test", associate .rb and .rbw files to that ruby, and update the PATH
c:\>rubyinstaller-186-p398.exe /silent /dir="C:\Ruby191-test" /tasks="assocfiles,modpath"
After you've run the above, close the Command Prompt from where you ran the above command, open up a *new* Command Prompt and type "ruby --version" or "gem env"
If things still aren't working, please provide details of the system (OS, user or admin account, attempted install dir, etc) and consider creating a quick screencast using something like http://screenr.com/
Glad it worked. The real "secret" was most likely that you didn't open up a new Command Prompt to type in "ruby --version" after you did the install in order for the new PATH and PATHEXT environment variables to be picked up. I'll make this more clear in the FAQ entry...thanks for bringing up the issue.
> I could see that this version does not have a scite editor in the
> package. Can I still download it seperately and still use it with this
> version of ruby?
> will that work?
One of the main goals of the RubyInstaller project is to keep focused on providing the best Ruby for Windows baseline environment that you can then configure and enhance to your specific needs. That's why we do not try to bundle in a "best" editor or attempt to guess the "perfect" set of RubyGems to bundle into the installer. These decisions are best left to you rather than us :)
That said, you should absolutely be able to use scite or any other editor you're comfortable with. I know others use it. I use GVim as my main editor these days, and I also personally like http://www.sublimetext.com/
Good luck and happy Ruby coding on your Windows system!
# silent install to default dir with no file associations nor PATH update c:\>rubyinstaller.exe /silent
# silent install to custom dir with no file associations nor PATH update c:\>rubyinstaller.exe /silent /dir="e:\my_test_ruby"
# silent install to default dir with private Tcl/Tk library installation c:\>rubyinstaller.exe /silent /tasks=addtk
# use Japanese installer to silently install to default dir with private Tcl/Tk, # file associations, and PATH update c:\>rubyinstaller.exe /silent /lang=ja /tasks="addtk,assocfiles,modpath"
# very silent install to default dir with file associations but no PATH update c:\>rubyinstaller.exe /verysilent /tasks=assocfiles
# very silent install to custom dir with file associations and PATH update c:\>rubyinstaller.exe /verysilent /dir="d:\rubyABC" /tasks="assocfiles,modpath"