is there anything that can make a public wireless internet signal stronger?

Question by maybe boomboom: is there anything that can make a public wireless internet signal stronger?
I’m not computer savvy,
was told one of these would help

http://cgi.ebay.com/USB-Wireless-G-WiFi-High-Gain-Adapter-Booster-Antenna_W0QQitemZ300350064559QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item45ee4247af&_trksid=p3286.c0.m14

will that help boost the public wireless signal,
or is this used for something different?

thanks for the help
the link isn’t working
if you could copy and paste
that works i tried it
thanks so much =)

Best answer:

Answer by CTN
yea its gonna help. especially if all you have is a built in wireless card.

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