Hi!
I don't know (I have wl500g). But I advise, you can check the kernel modules in /lib/modules/2.4.20/kernel/drivers/usb dir. (if kernel version not 2.4.20, replace substring '2.4.20' to your_kernel_version_string)
If you look these files:
ov511_decomp.o <-- ov515 webcam module
ov518_decomp.o <-- ov518 webcam module
ov51x.o <-- ov51x webcam module
pwc.o <-- SAA8115. SAA8116 webcam module
pwcx.o <-- SAA81xx webcam module
Other kernel modules:
audio.o <-- usb audio module
printer.o <-- usb printer module
usbcore.o <-- usb main modules (HUB and etc.)
If you found ov*.o and pwc*.o modules, the WL600 compatible with WL500.
Bye,
George