phranque - 5:55 am on Jul 10, 2013 (gmt 0)
welcome to WebmasterWorld, Brian!
since you mentioned "robots.txt" you should understand that robots.txt is actually a protocol for excluding crawlers such as googlebot, but if you want to use the meta robots noindex element you must allow the url to be crawled or the bot won't see the noindex directive.
to prevent indexing of an HTML document you put this in the <head> of the document:
<meta name="robots" content="noindex">.