USB and V4L modules

[lebo]

Hi I'm a newbie on using redhat 9 and I have it running on my machine ,how will I know if USB and V4L modules are loaded,because I have a project to load driver for USB Logitech Quickcam Express webcam and before I could do that the following requirements must be met (1)kernel 2.4.x with USB and V4L support,
(2) working gcc >= 2.95
(3) kernel source for the same kernel,the symbolic link /lib/modules/'uname -r'/build should point to the same source directory.

And I'm using kernel 2.4.20-8 with same kernel source and gcc version is more than 3.2.2 but not sure if is it working.
Can you help on all procedures to follow to check tha

[Oleg]

you need to cross-compile for the wl500g, not just compile.