hi my website is www.firmsearch.net and need suggestions to how to rise my pagerank?Does anybody help me?

try to submit to different free pr directory ,search on google for free pr directory submit.

If you're looking to increase your PageRank because you're a member of the group that believes that it is the be all and end all of search engine rankings, don't waste your time.

1) The PageRank for a page is based on the number of inbound links to it, and there really isn't much to link to on your site.

2) You don't have a lot of text on your opening page (the page indexed first and most often) for search engines to grab at.

3) Your site is a glorified telephone/address directory with no real company information other than that which is already in the public domain.

In other words, your site doesn't offer anything useful and there's no point in promoting it.

you've built an attractive directory but like adam said you need links, work on the content, and the links will come if you offer something that people want.

also, be carefull of mixing advertising with Google AdSense, read the TOS and make sure your not violating anything, or planing to.