Need SEO Expert

We are looking for an individual or a company to provide intensive SEO and link building to our Web Hosting Directory. A good rank on google for the query "web hosting provider" is sought, along with a similar result on Yahoo. The keyword is very competitive and it boasts over 70,000,000 pages when its searched so we are not expecting this job to be done over a month or two. No advanced payment will be done but will be made based on results. The winning bidder will also have an option to take on work in other areas of web promotion for this website before it is offered to the public. PLEASE DO NOT BID IF YOU ARE NOT CONFIDENT OR IF YOU INTEND TO USE ANY ILLEGAL TECHNIQUES SUCH AS CLOAKING, DOORWAY PAGES ECC.. WE ONLY HIRE WHITE HAT SEO EXPERTS. PLEASE NOTE THAT IF THE SUCCESSFUL CANDIDATE WILL SUCCEED IN GETTING OUR SITE TO TOP 5, HE/SHE WILL BE ASKED FOR A LONG TERM RELATIONSHIP.