Why don't you squeeze the doughnuts out of your ears and get some sense into that dormant organ you keep hidden inside that thick skull of yours? Did it ever occur to you that it is easier to write a virus in visual basic rather than C++ because basic is a much easier programming language? Do you realize that you don't need to be root to have all the files in your home directory, where all the documents and local program configurations are, infected or wiped out? I've already posted an article on this forum describing how deluded the notion held by Mac and Linux users is that their operating systems are more somehow more secure than Windows. There are and have been huge gaping security holes in BSD and Linux, but people don't hear about it like they do when one of Microsoft's operating systems has a problem. And, actually, since no one has any official quality control over Linux like Microsoft does, and due to the fact that very few people are actively trying to discover Linux security flaws compared to the legions attempting to hack Windows every day, it is very likely that Linux has far more security holes in it than Windows does, as Windows has undergone much more rigorous scrutiny. Also, I keep my system up to date, run a virus program and a decent firewall, and I've never had a problem.
PS Speaking of easy to write, I could e-mail you a shell script with the single command rm -Rf ~ and you'd be done for.