Is there any problem installing Ruby 1.9.1 when i already have installed ruby 1.8.7 running with rails?

I have ruby on开发者_StackOverflow rails installed on my Desktop running

ruby 1.8.7

and

rails 2.3.8

i want to know is installing Ruby 1.9.1 version will mess up with my Rails apps?

Thx.

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What you are looking for is RVM.