Download and install the program Team Player at Home - Wunderworks - Welcome to the Future of Interaction
You get a free trial of 30 days, purchasing it costs €15.99
You can attach a second mouse to your computer then. A second mouse cursor should appear in Windows. (Normally two mouses would give input to only one cursor)
Run WoW on windowed mode and drag it to your second monitor's screen.
That's how you can get bots which require a mouse working, while you use computer normally.
I'm now running a pixel-based Fishing bot on the second display, while browsing the web.