I don't understand, on 10.5 I not only don't have NetInfo, but also, niload and nidump aren't there either;
CrazyMcphee:~ root# niload
-sh: niload: command not found
CrazyMcphee:~ root# nidump hosts
-sh: nidump: command not found
CrazyMcphee:~ root# man niload
No manual entry for niload...