Create a nice mini-website that has some relevant content. Another option is one of those "parked page" landing pages that offers a revenue share. Just Google it for more info.
Another idea might be to use Adwords or Yahoo's overture for some pay per click marketing. Make sure you read-up on them, because you could end up wasting a lot of money.
I have to Core Duo e1505, and it's great for general use. I upgraded to 2GBs of ram.
One quick note, I would NOT get the "True Life Glossy" upgrade. It's impossible to use outside with the coating.