yes you can network Win 7 to Win2k.
i would not use home groups as its well after win 2k was released.
set the 2 computers to the same workgroup.
share your printer from the computer its connected to
then from the start run command type \\computer-name\
obviously substitute computer-name for the actual computer name of what your trying to connect to.
and it will bring up a window where your able to right click the printer and click connect.