You shouldn't have any problems using linux/samba on a NT network. There are some problems with Samba as a PDC mainly if it does get used enough. Don;t have a Samba PDC for 3 users.

As for storage it shouldn't be a problem.

Don't use AutoCAD but all my other settings are saved to the linux box through samba no problem.

Check out your dealer that you bought the linux box from for advice failing that google it and see what comes up.

Robert Aitken