hi,
I have a fair amount of experience within these field and have been working alongside a Reputation Management company doing exactly what you require for some time now.
There are plenty of assets that could be used to achieve your goals: Facebook, LinkedIn, Twitter profiles are all really good places to start, as well as the other websites that you own.
It is important to understand, however, that if it was really really simple and quick to do this, then everyone would be doing it. Having worked in online reputation management for 6 months now, I can say that it can take up to 3 months of intensive work to see results, but the benefits of it can be huge.
regards,
James