I am very pleased to report that I was able to successfully install the UI mod! Thank you Imp, I followed your steps and they worked. Appreciate the help! Hooray!
Thanks a lot for taking the time to help Wisp and The Imp, I appreciate it. You may have to put up with my ignorance for a moment though as I'm pretty unfamiliar with all of this.
The Imp, I'm having a hard time following your instructions. I've downloaded the Windows binary of WeiDU and extracted it into the Planescape folder. Note that I'm on a Mac, so I'm right-clicking the application, selecting "Show Package Contents", then placing the files in "drive_c/GOG Games/Planescape Torment".
After that step your instructions say "copy it there a few times". What exactly do I need to copy?