[Samba] How best to get ACL support?

[Sytsma, Richard]

My Dell server was preloaded with Redhat 7.2 , Linux 2.4.7-10,  gccv2.96 with  Ext3 file system.
I want to  install the machine into my company W2k domain using winbind but my Linux kernel does not support the needed ACls. I 
  
Does the latest Linux kernel come with ACL support and if so should I just update the kernel to 2.4.19 which I think is the latest production quality kernel?
The ACL patches at www.bestbits.at list patches for kernels 2.4.19, 2.4.18, 2.4.17, 2.2.20 but not my 2.4.7-10.  Does that mean the patches for 2.4.7-10 are not available or just should not be attempted?