If I remember correctly, you open Play On Linux, then run the installer for Pox inside it. It has been a couple years, and I don't currently have a Linux box I can test it on. Maybe this weekend I'll get some time to setup a Linux Virtual Machine and test it.
This whole time I though wine was being referred to as the alcoholic beverage until I saw it like 3 more times after the first time it was mentioned and I put 2 and 2 together
before pox was with owl i used java client under linux with icedtea and it worked realy nice dont know if its still viable
emulator emulates enviorment of windows for programs to work in much like crapy virtual machine wine translates program on the go basicly simplest explenation i can provide