Because of the location of most peoples homes, getting any more than 6 - 10 channels over the air would be lucky. They will usually only be your local network channels abc, nbc, tbs, pbs, fox, and a few others. Without any type of cable, satellite, or ip tv coming to your home, you won't get anymore than what you have now. You could always try for a better antenna. Even so, your amount of channels are unlikely to increase though your reception quality might.
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THERMALTAKE 450 WATT MODULAR P/S 120MM FAN
INTEL CORE 2 DUO E8400 WOLFDALE
2GB DDR2 KINGSTON HYPERX 1066MHZ
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GIGABYTE SILENT PIPE II NVIDIA 8600GT 512MB
PIONEER IDE DUAL LAYER 20X DVD BURNER
HANNS G 19'' WIDESCREEN LCD