If your Google PR (page rank) is high, your site will place high in the search engines. Well, maybe and maybe not. There is no pure guarantee that the page rank you hold will automatically yield any particular ranking in the search engines. Look at it this way: millions of websites will fall under the category of PR0 to PR7 (PR8 and above would be very tough for the average website to reach) and that means not all of them can automatically be ranked at a certain level. PR has much value but its value is also limited and High PR is very strict when it comes to spamming and registration. Find out more about Google SEO by following the link.