Where do I find a way to get and install wine on PCLinux ISO
Clarify that. Are you running PCLinux from the iso file you put on a DVD or flash drive? If so, anything you install will be gone on reboot. That's the nature of it.
If you have PCLinux installed to a hard drive, just open Synaptic, enter your root password and click the Search tab at the top of the Synaptic window and type in wine. You should see several options.
If you have done this and your problem is running World of Warcraft, let us know. There is a support section at the winehq site below. It would help if you were more specific on exactly what problems you are having.