Usb wifi booster antenna?

I have permission to pick-up my neighbors open wi-fi signal. So, I have a 1 watt, 30 dbm usb wifi booster antenna for my laptop but it isn't doing that great. Sometimes I don't get connected and other times, I lose my wifi connection. I'm thinking about getting a better booster antenna but it is 41... show more I have permission to pick-up my neighbors open wi-fi signal. So, I have a 1 watt, 30 dbm usb wifi booster antenna for my laptop but it isn't doing that great. Sometimes I don't get connected and other times, I lose my wifi connection.
I'm thinking about getting a better booster antenna but it is 41 dbm and is 13 watts. Is the 13 watts to much for my laptop? Thanks.
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