Postgres on shared network drive

Using windows XP and TCP/IP network.

I install PostgreSQL on a client PC and put the data files on a
networked drive (instead of the local drive).  Postgres as user and
local****t. This works well.

Now I install postgresSQL on another client machine and point it to
the same data directory on the network drive.

Will this setup work OK for multiple / concurrent users and accessing
the same tables on either of the client machines or is there something
else I need to be aware of?

Thanks for any advice.