SBS 2003 - Default Printer on Vista

I just added a Vista PC to my SBS network, however what I notice that when I
login with my user name, i see my default printer change from my network
printer to another printer. However, when I go into the control panel >>
Printer Section........and try to rest the default printer back to the
network printer it will not allow me to, also if i delete that network
printer and re-install it it will let me default it to the default printer,
however when i shut down and log back on using the same usersname, the
default printer reverts back to the first printer it sees and not the default
printer that it had previously setup on.