Both computers are within 10 feet of the 54GC and I have about a -35 dB signal with -85 dB of noise.
The first part below symbolically shows my network configuration.
FIOS to a router (theirs), to another router (mine) to a 10/100 switch to the WRT54GC and to a 10/100/1000 switch
The 10/100/1000 switch goes to two computers (a P3 and a P4), the 54GC goes to two laptops (Celeron and a Pentium M)
To compare, I tested the Pentium M both through the WiFi and through the wired connection on the WRT54GC.
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