you have to do alots of things fresh and unique Content Press Releases High Pr directory submission Relevant Link Building Social Book marking video marketing pages like squidoo , hubpages forums and than wait. be patience and be passionated Good luck
You have to wait and submit your site in good Social Bookmarking site and create the good link through Article Submission , Directory Submission, Classified Submission, Hub Pages, Squidoo ..And very soon you will get PR
This is my tip: do blog commenting, directory submission, social bookmarking/ social networking, blog posting, Link Exchange(niche), pod casting, rss feeds, article creation and submission,forum posting(niche or webmaster will do)