Configuring Windows Client

[Mitchell]

Hi list, I am trying to configure my Windows 2k Pro client to connect to
the new Samba PDC. 

I go in to control pannel, system, network intification, and join myself
to the BLITZ workgroup. 

It then asks me for a user/pass to join this domain, I enter mjs/xxxxxx
to join the domain and get the following error. 

This is a computer account, use a global user or local user account to
join this domain. 

What does this mean? 

Thanks