wordpress twentyten chid them sidebar problem

I'm using a child theme of Twentyten theme. I want to make a template, where I'll have a left sidebar and it's styles will be completely different from my primary sidebar. I'm using the secondary widget area for this purpose. I've followed this solutin by digital rai开发者_如何学Gondrops first, http://digitalraindrops.net/2010/10/twenty-ten-alternate-sidebar/ ,then used their files. Everything seems ok with the code, but the template isn't in the option where I create the pages. That means I can't select the template I just made from the pages eanu in admin. Any ideas? do I need to put the template file in the parent file directory and not in the child theme directory? Thanks for the help.

note: I can add widget in the second sidebar and the primary sidebar, and they are showing fine in the back. Oh, my primary sidebar has vanished too!! Please help!

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solved the problem myself. I forgot to add register_sidebar in function.php.!