Well, Improving a page rank can be achieved in many ways. You need to do lot of SEO works to achieve it. Such as,
Directory submission,
Article submission,
Link submission,
Search Engine submission,
Keyword generation, etc., it goes on.
You need to do this everything manually and wait for the results. Page rank will not be improved rapidly, but you will get a moderate improvement.
Or you can try any SEO tool for this. for example you can get a
Search Engine Visibility tool from
www.Tucktail.com . This tool does,
* Increases traffic to your website with higher rankings.
* Easy, one-click website submission to Google, Yahoo!, Bing, Ask, AOL and many more.
* Easy one click submission to over hundreds of directories.
* Improves search engine rankings with keyword and suggested topics tool
* Track progress with Top 10 SEO Checklist and ranking reports.
This tool is very simple to use so you need not be technically expert to handle this. These will result you in better page rank. You can see the difference immediately.