Running Win7 64 bit

Having troubles installing RMagick. I was following the read me, and I
only got to the part where it tells you to type out "gem install rmagick
--local" and then I get the following error: "ERROR:  Could not find a
valid gem 'rmagick' (>= 0) in any repository"

So... basically I'm not sure how to continue from here? I keep reading
that there are ruby header files that I may not have or if I really need
them.

If I do, I'm not sure where or how to get them.

Sorry for my nubness ;_;

I appreciate the help in advance, thanks!

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