modprobe: Can't locate module usbcore

Hello Linux forum!
I am working on an older Red hat Linux version(kernel) 2.4.21 and I have compiled the kernel and I select it on startup, but I get the following errors:

Mounting Local Filesystems: Modprobe: modprobe: Can't locate module usbcore
modprobe: modprobe: Can't locate module udf
I've been googling and have followed many threads on this and many forums to no success.

I have added the following options in the make menuconfig:

- file systems

- dos fat fs support(modular)

- VFAT (Win95) fs support(modular)
- USB support

- preliminary USB device filesystem

-USB mass storage support(modular)

- USB human interface device (full HID) support(modular)


http://dev.forums.justlinux.forums.r.../2012/08/3.png

http://dev.forums.justlinux.forums.r.../2012/08/4.png


Would anybody have any tips on how I can fix this? I have no idea why I am getting this error if I have all those modules added.

Thank you