If youre using snow leopard all you need is Xcode. Rubygems is already installed so if you want version 1.8.7 just issue the following command

sudo gem install ruby 

That should so it. If you want ruby 1.9.2 that's a little different of course. 

Best,
Steve

Sent from my iPhone

On Oct 3, 2010, at 6:15 PM, Basi Lambanog <basi.lambanog.tuba / gmail.com> wrote:

> Thanks for the reply. So I'm downloading Xcode ... but for some
> reasons it's taking a long time (8 hrs! believe it or not) to download
> on DSL 2.9GB. That is unusual...
> 
> 
> On Oct 3, 12:06 pm, Luis Lavena <luislav... / gmail.com> wrote:
>> On Oct 3, 2:55 pm, Basi Lambanog <basi.lambanog.t... / gmail.com> wrote:
>> 
>>> hello,
>>> total mac newby here. i'm traying to install ruby via rvm but i'm not
>>> having much success. git is already installed. What I do:
>> 
>> How you installed git? It is available in the PATH? (which git)
>> 
>> Also check the prerequisites page of RVM:
>> 
>> http://rvm.beginrescueend.com/rvm/prerequisites/
>> 
>> A working Xcode installation also is needed.
>> 
>> --
>> Luis Lavena
> 
>