Advertising Question

[eugeneo]

Hi, I manage a very popular forum at http://www.se7ensins.com. The it has over 15 K + Members with over 1139790 Page Views Per Month. With about 25 K Unique Visitors per month. We have a page rank of 4 and making enough money to pay for the server but to prepare we would like to spread the website over 2 servers. For this we need more money. If I were to offer advertising space how much would I be looking for?

Thanks