I face a dillemma here. How do I get the bitcoin client into a non internet connected machine? This is assuming that you can never 100% trust the computer you're using to download the client. Along each step in the process of securing your bitcoins there is a small but every so slightly possible risk. Heck the client itself could be compromised. A hacker could break into the sourceforge servers and cleverly attach a payload into the official client. Guess how many people would not notice until it was too late.
Download a client from Bitcoin.org with a fresh OS and transfer with a USB key. I'm still using a client several versions back. Yes, if the client is compromised there is nothing you can do. But wow, how can you think this paranoid and still be the victim of a 25,000 BTC theft? Or is it that you are just now thinking this paranoid? Paranoid is a bad word for me to use, it's actually being prepared.
What I thought of is an actual bitcoin wallet device.
Basically this is what I'm saying. But this device will never connect to the internet. It doesn't need to. It's for savings only.
It is just now that I'm this paranoid. I used to trust the bitcoin client and the various mining programs. Now I don't think I can trust anything bitcoin related except perhaps what I have no choice but to trust which is the official bitcoin client.