Access point on Network works but can't find an IP address for it. - brush-head

Hi all,
have just started a new job and have come across something I haven't
encountered before and am beginning to run out of options/ideas.

Have a small (max 60 nodes) LAN. There is a Procurve switch (can't
remember the model number - has 48 ports) and on one of these ports a
Linksys WAP54g access point is connected. There is only wep security
available on this particular model and it isn't enabled. I want to
configure it and this is where my problem presents itself.

I have tried tracking down the IP address of the AP. I've used Angry IP
to report all IPs on the network and accessed all devices including the
Pro-Curve and a proper networked printer I didn't know we had! But I
can't find an IP for the AP, so that I can reconfigure the device.

I've managed to download a manual for the AP which covers the current
model (includes wpa) and that says that if I connect directly to the
only ethernet port on the AP with the CD, I should be able to configure
it. You've guessed it - no CD.

I could of course get a new AP but I don't know if I'll finish in a
similar position & I think the reason is that most things have been
configured for DHCP including this ProCurve switch and the assignment of
fixed IP addresses seems to have been done on the basis of excluding
specific addresses from the dhcp scope - and not in any particular order
either. I've been used to a specific scope where ranges of addresses
have been set aside for fixed IP and within that for particular types of
device like networked printers, servers, and other "static" devices and
leaving DHCP mainly for desktops and notebooks and other variable pieces
of kit.

Having said all this the AP works, wide open, but it works.

Any thoughts are welcome.