What do you want PR for? If your getting good traffic to your site, thats all you need, afterall your website visitors dont care what your PR is. PR is only useful if you want to sell links on your site, but that is against Googles T&C's, so you would probably only end up getting your site banned. Just build up links to your site to gain extra traffic and disable the green bar in your browser and forget about it, thats my advice.
Your site will get ranked if you update it regularly..PageRank is harder to get than Traffic.. cos PageRank combines all..