term099 - 2:01 pm on Aug 27, 2007 (gmt 0)

I have a relatively new website, (around a year old) and I would like to perform keyword optimization for some pages. If I do that for a specific page, how long should I wait until I can see the results in Google? Is there a given amount of time that it takes Google to re-index a given page? I know that there is no fixed amount of time, but maybe from experience you could give me a rough estimate...

Thanks