17519 Top 10 Google/yahoo Ranking

Ok I have a site [login to view URL] I want to work on a system of, i pay when i see my site in the top 10. This way i am guarenteed full work! Because i have worked with people in the past who say, yea yea ill get you in the top 10, i pay them, then they give up. Months later i find my site on the 20th page or something. To start with i will have around 2 sites i need done. Bids should be per site. I want to know how long you guarentee the top 10 for and how long you will keep working on the sites for. As i said payment when i see it in the top 10. If you dont like that, dont bid. However if you think your good, prove it and let me see my site in the top 10. Money can be escrowed. I will pay for complete work guarenteed. I am looking for keyword computer repair houston computer repair austin computer repair dallas or even computer repair by itself. Thanks