Network flow splitting using "net use" command

We have a Windows 2003 domain with several machines (all of these machines
are Windows 2003 machines). These machines have each several network
interfaces. Each network interface is part of a VLAN. The idea is to split
the network trafic in order to improve security and to not merge all the
traffic. These machines share directories.
For example :
MachineA have @IP 10.0.0.1(mask 255.255.255.0), 10.0.1.1(mask
255.255.255.0), 10.0.2.1(mask 255.255.255.0) and this machine shares
directories DataShared1, DataShared2, DataShared3
MachineB have @IP 10.0.0.2(mask 255.255.255.0), 10.0.1.2(mask
255.255.255.0), 10.0.2.2(mask 255.255.255.0).
From this MachineB, when we type : net use \\10.0.2.1\DataShared3 are we
sure that the network traffic goes throught the VLAN 10.0.2.0(mask
255.255.255.0)?
If yes : if we can divide the network traffic by this way, can we do the
same thing by using a name instead of @IP?
And finally, if we can use name, how can we map name and @IP, without using
lmhost, or WINS server (we have tried to use DNS server but it doesnt work :
we have an error 52)?

Thanks for your help.

Didier