Well, SMB 2.0 does have support for symbolic links. The point is the server is free to implement it or not. I can create symlinks on a share from a Win 2008 server. So it sounds like the NetApp implementation of SMB 2.0 just doesn't include support for symbolic links...
Anyway, I was looking for even more: I was expecting UNIX/NFS symbolic links created on the filer from a Linux workstation to be seen as SMB/NTFS symbolic links on a Win 7 workstation!
Thanks for your answer, but I guess I'll have to find another way.