My Way of giving back to the community...Need Computer help? post here!

[GerardoG]

Hi there! I need help!!! Let me explain my issue. We just switched to fiber optic modem (model is I-240-WR), and all of our computers and toys are Mac (laptops, desktops, iPads, etc.). After the change, the reception in certain areas is pretty bad, and the idea of running ethernet wires to add second routers/repeaters is out of the question (big mess to do so through brick and concrete).

I tried Airport Express but somehow I get a system issue that does not allow it to hook up to the existing WiFi and expand range, so one of my brothers suggesting adding a high gain antenna. I googled the concept and came with tons of models, brands, 'gains' (?), dB (?)....

What can/should I do?

Thank ou in advance.