It's really hard. It depends on the type of router you have and what kind of band it is on whether it be G or N. Some bands go through walls better than others. My first suggestion would be to get a more powerful router. I went out and purchased the top of the line Linksys available for residential and small business solutions and that solved a bunch of problems. Other than that, there really is not much you can do besides getting another adapter, or buying the new xbox which has a better wireless adapter.
