On Feb 17, 9:03  
> Thanks Roger for your comments,
>
> I believe you are under impression that I am not able to open file with
> SCITE editor but the actual problem is if I am saving the .rb file and
> trying to run the code by 'F5' button then it gives me error 'the system
> cannot find the file specified.'
>
> --
> Posted viahttp://www.ruby-forum.com/.

SOunds like the new install didn't add your ruby bin dir to the path

I think you can also edit the ruby properties file  (in SciTe) to give
the full path to ruby.exe