Belkin Range Extender and Airport Express

Hi,

I'm absolutely ignorant regarding wireless technologies. I installed
an Airport Express at home for use with my PC (Windows XP SP2) to
broadcast music with my stereo. I have a Belking G Wireless Card.

Now, my walls seem to be full of lead, because the signal is very
faint and the connection unstable. I thus bought a Belkin range
extender to put it midway.

However, looking at the install procedure, I can't seem to see how to
make it work with Airport Express. I don't have a router, and the
instructions seem to be quite focused on router configuration.

Any help on how I should proceed with an Airport Express would be
gratefully appreciated.

Thanks in advance.

Raph