Okay, here's my problem:
The character I play is a vanquisher. As you probably know, if you want your character to shoot instead of moving around, you have to keep the shift key pressed while clicking the mouse. And that one's the trouble maker - because if I use my healing potion hot key with the shift key pressed, the healing potion is applied to my dog.
Is there a way to get around this?
Help appreciated!

Come on, anyone, please!

Okay, asked support and got the following very detailed, very good answer (a big thanks to GOG support on this site, ladies and gentlemen, you are AWESOME) :

[...]
You can edit key bindings from settings file located in your:
C:\Users\YourUserName\AppData\Roaming\runic games\torchlight\settings.txt

Command responsible for hold position with Shift key is labeled:
KEYMAP_HOLDPOS :16

You need to change 16 parameter to different number. Here is the same keycodes table that Torchlight is using:
http://www.cambiaresearch.com/articles/15/javascript-char-codes-key-codes

After editing remember to save the file and then launch the game from your desktop shortcut.

Regards, [...]