USB vs HDD
Right now I am running BT3 off a 2GB USB drive, and everything is working fine with space to spare. My question is if I still need to install it to my HDD? I understand 2GB isn't a lot of space, but if I am only using BT3 for simple tasks (cracking WEPs once I get better at Linux) is it still necessary to install it to my HDD and partition my HDD for it?
If you're planning to use wordlists or even rainbow tables I would recommend using the HDD install. When you're just sticking to WEPcracking your USB-stick will be enough.