I kinda agree with Dom, but I don’t think misterDH was trying to game the engines or outsmart them. I think he was just asking a reasonable question.
My own view is that getting search engine spiders to revist your site on a regular basis is pretty easy. I also think that coming out of the box with a site of 100, 1000, even 10,000 new pages isn’t going to trip a filter.
Just create a good site, take care of it, and get lots of links (particularly deep links) to worthwhile content and you are on the road to success.