here is a good site if u want to buld back links with good sites url of site is http://www.gotlinks.com/ it will give u a code (php or asp etc ) copy the code into a page and place it into your server give a back link to that page from your home page and u will see all and just do accept the link exchnge req from the site and thay will automatcaly added in you link page vist site for more details thnx u can see the page excmpal at http://www.dadyal.info/links.php
I am always a little cautious of link exchange networks like this. Looks like a decent site but these systems of backlink building are just too easy to track by the search engines like google, and you can soon see your sites dropping in the SERPS or falling into that dreaded sandbox.
i also have pr1 after 30 days of my site lunch but dont now how i did not paid any one dadyal.info is my url