Now while in game you will have to hold Shift and hit the ~ key to pull up the console. Here you will see the 'Settings' txt file, click it and at the bottom you will see 'Console :0'.
Do this by going into: My computer/ C:/ Documents and Settings/ User(mines Admin for example)/ Application Data/ Runic Games/ Torchlight.
To activate the console you will have to change the settings file in the Application Data Folder.