Mac OS X 10.5 "Leopard" is available from retailers such as Amazon for slightly less than a King's ransom.
Lalaso Perez wrote:
... Is there a way to do it online?
If you have an Intel Mac (as opposed to a PowerPC) you can probably upgrade to Mac OS X 10.6 "Snow Leopard" for only $20.
To determine what kind of Mac you have, > About this Mac...
There is no "download" version of Leopard (10.5). Anyone who says they have one is giving you a copy of a single-use license. That is illegal and we could not help you with it because of the violation of the license. You also would receive "modifications" they add to report your activities to their central server (eek!).
Legal disks cost around $200 on ebay or amazon.
Requirements for Leopard:
If you have an Intel processor, you can go to SL for about $19 instead of $200.