I have only one or two Windows apps I need to run every day.
One is a proprietary program that connects to a financial
website - THEY wrote this "high-security" software and are
unlikely to ever produce a Linux version. I have never had
a problem (so far) running it under Windows.

However, I'd like to get off Windows altogether, and start
using Ubuntu exclusively, particularly for web browsing, email,
etc. The hope is to minimize web-induced viruses, spys, etc.

So it would SEEM at first glance that Virtual Box is the
obvious answer - install V/B on my Vista machine, and do 99%
of my work in the Linux guest window, especially nearly all
the browsing, email, etc. And only use Vista when I MUST
run that proprietary software that links to the financial
company's website.

I'm looking for an opinion here - am I on the right track?
Is V/B the way to go for someone who wants to only use
Windows for apps where it is REQUIRED, and do 99% of web-based
stuff from Linux? Seems like V/B will be much more practical
than dual-boot, simply because you can switch back and forth
quickly, rather than having to go through a boot process on
each change of operating system.

But I'd like the opinion of someone with more experience in
this area than I have - before I invest the time and effort
to get V/B loaded and running.