Do all these on page and off page optimization techniques.
On page :
* Use relevant keywords and phrases
* Optimize each page
* Provide useful content
* Participate in the Social Media Community
* Build Back-links to your site
Off page :
1-social networks (myspace, facebook, twitter, linkedin and using to other social media.)
2- social bookmarks (digg, delicious, and other social bookmarking sites.)
3- directory submission
4- RSS submission
5- blog commenting
6- forum marketing ( participating in relevant forums)
7- using different one way link building techniques
you can also buy traffic from freelancers from SEOclerks at cheap rates.