To check if APGGART is compiled into kernel look in the config file found in /boot:

As root try:
Code:
grep AGP /boot/config-2.4.20-xfs
it then returns:
  • CONFIG_AGP=m
    CONFIG_AGP_INTEL=y
    CONFIG_AGP_I810=y
    CONFIG_AGP_VIA=y
    CONFIG_AGP_AMD=y
    CONFIG_AGP_AMD_8151=y
    CONFIG_AGP_SIS=y
    CONFIG_AGP_ALI=y
    CONFIG_AGP_SWORKS=y

The above tells you that the kernel has AGP support but only as a module (m).