smbfs not in the kernel

[Partha Bagchi]

I tried to mount a windows share and I got the following error:

ERROR: smbfs filesystem not supported by the kernel
Please refer to the smbmnt(8) manual page
smbmnt failed: 255

uname -a:
2.6.15-1.1929_FC5 #1 SMP Fri Feb 10 01:40:16 EST 2006 x86_64 x86_64 
x86_64 GNU/Linux

Any reason for this?

Thanks.