wireless to wireless network question

I'm about to depart the hot southwest desert for the mountains in our
travel trailer. Last year the WIFI service was margina (mainly low
signal levels inside the trailer)l, so this year I've installed an
outside directional antenna on a rotor. Since both my wife and I want
to use computers at the same time, I created an in trailer network.

It consists of: from the house Qwest(Actionteck) DSL modem to a
Linksys WET54g bridge(located in the trailer) (wired) to a Linksys 4
port hub. From the hub I connect (wired) to my computer. Also,
(wired) to a Linksys WAP54g access point. Connecting to the WAP54g
(wireless) is a WMB54g music bridge to the trailer audio system. When
feeding audio from my computer the system works OK.

When I connected the laptop (wireless) to the WAP54g, I get a good
signal level connection, however when browsing the WEB, the screens
are somewhat jumbled or I get a "can't display that page" error.
Connecting directly (wireless) to the Qwest modem, things are OK.

Am I trying to do something that isn't feaseable?
Thanks

FYI, the coax feeding the WET54G is about 8 inches - I mounted the
WET54g just inside the roof and the antenna is just outside the roof.
Besides, the signal level is shown as 100% on both WIFI sources.
(Probably not quite the same, but certainly adaquate.)