I'm going thru the book 'Learning Ruby' and am trying to use TK... In IRB, I entered the command: require 'tk' but it returns: no such file... If I go to the shell and enter the command: tclsh it works. So, I'm guessing I have TK but Ruby can't find it... I'm a 'newbie' to the Mac and I've just gone thru the agony of updating my Rails, I had to buy a Snow Leopard upgrade [$24.99] to do this... I'm heading to the new version of the Pickaxe book and have done Rails a while back on a PC... So, I'm looking to use Rails but would like to put up a few apps with TK...and I have to use the Mac... I'd appreciate any help... Thank you -- Posted via http://www.ruby-forum.com/.