[CentOS] CentOS mount doesn't support smbfs type ?

Hi,

I'm trying to mount a Windows folder from a Linux box with the command:

# mount -t smbfs (...)

but I get the error:

"mount: unknown filesystem type 'smbfs'".

Does this mean that CentOS mount doesn't support smbfs type ?
If so, how can I enable it ?

I'm using 5.1

Any help would be appreciated.

Warm Regards,
Mário Gamito