Boot from USB, Firewire is not possible with the standard issue Windows. Even if you had the Vista DVD that is not supported.
Let's say you moved this new drive to inside the PC. Since it crashed we're not sure if the clone is any good.
Looks like you should set that drive aside since it may have your LAST COPY of your files and get another drive to go inside the PC. Next you need to find, acquire the missing Vista DVD (it never came on CD) or install UBUNTU (see google) until you get it sorted out.
But here's the bottom line. We don't want to touch that 22GB or 1GB drive until we are sure we have our files safe.
Ok, I recently got a bigger hard drive(260GB SATA) that replaced my extremely small 22GB main drive (C:).....but before I did that....I downloaded a program that imaged my main drive (C:) to my storage(1TB SATA) drive(E:)...funny....right after I imaged it, my PC crashed....but now I have no idea how to boot from the storage(E:) drive!!! I already installed my new hard drive & I see the PC recognizes it... Can someone guide me? My PC is down!! I was running on Vista but I do not have the Vista CD