Everywhere i go, i see people thundering on about links. I tested this theory a few years back and created a brand new site. I did no advertising of the link (other than submit to google/yahoo/msn) or any part of it, on my gazillion profiles on various sites. It was a personal site and had no real value or need to have anyone link to it. All i did was design it properly and make it easily accessible for spiders etc. Within 3 weeks i was sat on the first page of google when searching for my name. Somewhat impressive considering the number of people with my name. I ended up receiving emails from others who share my name asking what software/company i had used to reach that position as their site took years to establish and i seemed to have appeared out of the blue above them. Don't get me wrong, links can be a good thing if they are not spammed to death, but they are certainly not the holy grail.
As stated already seek to add backlinks from higher PR sites than yours, but quality content is always king as suggested by Viggenmort above.
Some of the PR Factors are given below: 1) Traffic, 2) Quality Content, 3) Quality Backlinks, 4) Coding Error Free Page ETC.
You need to build more backlinks for your site so that your pr will also increase. It's better if you can get backlinks form high-pr sites.
Blog comments, Article submission, forum posting and directory submission are helpful for increasing PR.
unique content and maintaining quality back link building are the important things in the process of seo.so first you keep concentrate on building quality back links then you will be soon getting your website good page rank in seo.
i think you should be concentrate on traffic and google SERP's. Your website PR will be increased automatically.
Submit articles and page links to directories and exchanges. If you have more traffic coming in to your websites, this could work to boost your ranking.
PR is value given to your web pages looking at it's authority by Google. so, till you make Google bot happy with your content, on-site optimization and off-site optimization, you will get high PR. And defining all these elements in this thread won't be enough so, explore yourself with SEO tactics and you will get high PR automatically. P.S Google updates Pr in every 3-4 months so, you need to wait there updates.