Stopping Googlebot?

[eluser]cbmeeks[/eluser]
I've noticed that the Google bot has been indexing my site. Normally, I want this. But, I have a couple of sample search links on my site and Google goes to that link. Then, at the bottom, I have a pagination system. There are literally millions of "hits" so Google is going to page 1, page 2, page 3, etc. Every 2 minutes.

I've put a meta tag for "robot" with "index,nofollow".

How long does that take for Google to notice? Is that even the right thing to do?

I've contacted Google in the past about other things and never get a reply or I would have just gone directly to them. What have some of you other CI users done? I've searched and searched and everyone seems to say use the method above.

Thanks!