A few things I'm wondering about based on the text on the website...
With this in mind, I decided to create a Live CD based on MiniXP architecture, by using BitVault the user will not have to worry about being infected or getting spied on by someone.
How exactly (besides being a LiveCD) does it ensure that it cannot be infected, especially since it's based on Windows?
I wanted to have a user friendly approach rather than a complicated (for most people) command line interface like Linux
Where did you get the idea that Linux is a "command line interface"? Environments on Linux like GNOME and KDE are often far more userfriendly than the Windows environment, and it's possible to customize Linux distributions to such a degree that you can make it only have the necessary controls for the purpose of the OS (which, in this case, would be Bitcoin-related tasks).
Now I also took a look at the screenshots... and I see a (commandline) batch file that is used to do transactions? Now seeing as you just mentioned you wanted to avoid command line interfaces, why use a batch file?
It can be infected, but you will be browsing the net anonymously and you are using firefox with no-script, Enforce HTTPS, harden Adobe Acrobat against attacks, this should help you a lot read :
http://anonymous-proxy-servers.net/wiki/index.php/JonDoFox_extension_for_Firefox Remember that you are using this LiveCD for Transactions only, you should only browse bitcoin related websites/forums to minimize the risks.
For the PDF reader I'd advise using Foxit Reader, both because it's a lot lighter/faster and more secure.
About Linux, the problem is most of the time you have to configure a lot of stuff with a command line to make it work properly on your computer, of course I know GNOME and KDE but like I said I wanted to use Windows as my first distro, I will make a Linux distro.
I've used SuSE (with both KDE and GNOME) for years, and never really had to use the commandline. When I did, it was usually because I *wanted* to mess around, not because something didn't work. Puppy Linux (which would be more useful for something like this) combined with IceWM gave me pretty much the same experience: no commandline needed to use it, at all. I work on (non-profit) refurbishing of computers regularly, and often use Puppy Linux on them, and never really had anything that didn't work out of the box.
For the batchfile, if pressing enter is too hard for the user than I do not know what to tell you.
I was only refering to the "commandline" thing
EDIT: Regarding KDE vs. GNOME, I'd certainly recommend GNOME for ease of use, KDE is simply too bloated and messy nowadays. For something like a simple Live CD however, IceWM would probably be the best choice.