Brian Krebs has provided people who use online banking services with excellent advice: do your online banking only from a read-only, bootable operating system, such as Knoppix, or Ubuntu.
Brian's articles on this subject have been featured by both Slashdot and Google. He provides a tutorial on how to burn a live CD using Ashampoo Burning Studio Free. If you use Nero, my tutorial on burning ISO images may also be useful.
For those who do not wish to burn their own ISO image, the large bookstores now have Linux magazines available which include bootable Linux Live CDs.
James McQuaid