As far as I remember the wg111t uses a Atheros chipset. If this is the case I am sad to say that the card you have will not be of much use as far as wireless cracking goes.
Atheros based cards use the otherwise great madwifi driver, however this driver does not support USB cards. Your only option is therefore to use ndiswrapper along with the windows driver for the card, which sadly will disable any chance of putting the card into monitor mode or injecting with it.
-Monkeys are like nature's humans.