Really the best thing to do is Google Adwords and Yahoo/Overture.
Do some reading about PPC advertising before you pay? The worst thign to do is blindly go paying for ads. You need to target the right kewords and the right keywords only.
2 tips for all...
1.Have about 10-15 percise keywords. If you are advertising a specific poker room then stay away from keywords that do not include your poker room.
2. Make sure the landing page the ad goes to is the exact thing you are advertising. DOn't expect people to navigate your site.
This should help you start out and save you a few $'s. These ads can expenisive quickly...
