Step8: Once the download is finished, extract all the content of that file inside C:\ folder, using 7-zip utility. After extracting, rename the folder to Ruby187.

Step9: Open a new command window and type:
pik add C:\Ruby187\bin

Yuppy!! it will add 187 into the existing versions of Ruby. From here you can install ‘N’ number of Ruby versions on Windows.

Advantages of doing this:

If using Netbeans, you can now easily configure/add/manage multiple versions of Ruby.
If you follow the old approach, your pik version of Ruby won’t able to include the DevKit, due to which you may face problems, while installing Native extension gems. For e.g consider this path: C:/Users/foo bar/.pik/rubies/. It contains a space between foo and bar. So devkit skips this many of the times.
Happy coding…
Your feebback/suggestions are always welcome.