[Samba] Samba over several IP Ranges ?

[remote]

Hi all !

I am the system administrator for a medium sized university network. We have a network of Windows PCs which is connected to some Linux (SuSE 9.1) machines via a Samba box. Also, we have a cluster of 17 DEC Alphas running SuSE 7.0 using a private IP range (192.168.100-115). One of the Alphas has two NICs and is used as a connection gateway to the ordinary Linux boxes. 
Each of the cluster nodes exports its hard disk via NFS to the cluster gateway. Now, for some reason (don´t ask, it´s my boss´s idea)  I am supposed to make these directories available to the Windows office PCs. 
Is it possible to use the existing Samba box ? Or do I have to set up another Samba Server on the gateway machine for the node disks ? Is it even possible to run 2 Samba servers in one workgroup ? 

Thanks for the help,

Jörg