Hello, I'm very interested in Bitcoins and bought a couple a month or so ago. I'm getting more confident in the potential that Bitcoin has and I really want to buy a bunch more. However I'm not completely confident with my security set-up and I'm very confused with the "How to set up a secure offline savings wallet" tutorial.

Can't I just install the client on a USB hard drive with the internet off, unplug the USB after install, then transfer the funds from my Laptop? Obviously it won't be nearly as safe as that insane tutorial linked above but how much less safe can it be? I don't want a Wuala account, bitcoin linux binary, ubuntu, truecrypt, or any extra stuff like that...