You refer to an article about Snow Leopard. You then mention Leopard and Tiger.
Please state your question more clearly, and also what Mac you have.
does http://support.apple.com/kb/ht1159 show your model ever shipping with 10.4.x ?
Here is OS X Tiger 10.4.11 running in VMWare Fusion 2 in Snow Leopard.
... and Mac OS X Leopard 10.5.8 running in Parallels 8 in Lion:
[click on images to enlarge]
Retrieving data ...