A question about playing 2 accounts on same PC at the same time.

[Ishar]

I multi boxed for a long, long time just alt -tabbing back and forth [mostly EQ, but some WoW as well]. It's doable; it's not optimal, but it's doable.

I don't know if there is any free key-broadcasting software other than HotKeyNet; there is free window management software like WinEQ though (which lets you configure hotkeys for tabbing to specific windows).

If you have multiple computers, a ghetto solution is to run the second character off another keyboard or keypad (highly configurable keypads like the nostromo are nice for this). I mention this because you might have some hardware laying around that can run WoW. [And temporarily running a character off a secondary input device is rather easier to jump into than almost any other solution.]

Meh, I've alt-tabbed, hardware-boxed [both multi-keyboards, multi-keypads, and used vetras], used KeyClone, and ISBoxer, but never actually used HotKeyNet for multiboxing. I probably should, just to round things out =p

Seriously, though, isboxer + the wizard just make things so terribly easy. And it can be as simple or as complex as you want to make it.