want to increase the Page Rank of our website

We need someone to increase our website's page rank. We would like to know: 1) How much you will charge. 2) What options you are going to opt for the same. 3) How are you going to work (explain in detail step by step) We are ready to go for the paid options as well, the only thing we want is to understand how are you going to proceed and will it go towards the right direction. Our second concern is that our work should not get spammed. We want guranteed result....if you think you are capable enough do write to us. Thankyou