samba - Aug 2002 - trust relationship with SAMBA 3.0 alpha19

Hi,
I'm using SAMBA 3.0 alpha19 to try the trust relationship between an NT 4.0
domain and the samba domain. The command I used was "net rpc trusdom",
but
it did'nt work, also the other "net" commands worked bad (
Segmentation
Fault or return -1 ecc.). Could you kindly to tell me how to do to set the
trust relationship with the SAMBA 3.0, or if there is any docs for that.

Thanks in advance!

Jianliang Lu