127808 SEO -- Google

I have a web design company ---- and I need the site in the top positions for several key word phrases in Google. I have noticed that yesterday my page rank went from a 4 to a 0 --- and I do not know why? I have checked all of the Google servers which at one time showed all 3-4 range - but now it is a 0. I need the following work accomplished: 1. Top 5 rank for three keyword phrases. 2. PR of 7 or better. Website address will be found in PMB. Contact me with offers. To the right programmer - I can offer a steady stream of work if this project goes well. All high bids will be deleted!