Larry,
Ubuntu is one of the more popular flavors (distribution or distro) of Linux. You don't want to learn a new system from scratch you say. So here is what you do. Ubuntu is available at
Ubuntu Home Page | Ubuntu. They are about to release their latest Long Term Support version which is supported for 3 years with updates that does not change the appearance or functionality of your OS for 3 years for Desktops (Updating to the next newer version after that is easy as clicking a couple buttons). Then when you do update, it still works and behaves the same but with some new features. Not sure if you are going to like it or not, well, here is where it gets really fun. What you download from their site is what is known as a LiveCD. With the LiveCD you have the full basic install of the operating system all on one CD. Put it in your CD Drive and reboot your computer. It loads up and you can try it out. If you decide you want to install they provide an Icon on the desktop. (And by the way, if your Windows ever dies unexpectedly after a patch like many did recently, you can use the LiveCD to get to your files on your Windows partition aka Hard Drive, and maybe even fix your Windows, VERY handy). Also, you can install it as an application on Windows. This feature is called WUBI. You pop the CD in the drive while you are in windows, and install it just like an application. Don't like it, well just go to add remove programs under Windows and remove it.
It is free, it is Open Source, it has one of the best communities online to support you. If you want, like Microsoft, you can purchase support from the parent company Canonical, but I would be surprised if you need that. It supports more hardware than the current releases of Windows Operating Systems. It is naturally virus resistant and malware resistant (meaning you don't need to run antivirus or A/V software, in fact I am not aware of any A/V software for the various Linux distributions except those that scan files for Windows viruses so you don't allow your friends running Windows to be infected, kind of a out of politeness thing...) Not saying it can't get a virus or malware, but the security model does not lend itself very well to them doing much on your system, and the percieved lack of market penetration of Linux means the malware writers will go for the low hanging fruit and with m$ (Microsoft) showing the most market penetration, well, it is a bigger target.
Other than Firefox for a browser you can also try out Google's Chromium browser. Though at the moment I recommend Firefox until Chrome supports NoScript or some other plugin like it. Which, though you will cuss it from time to time, I recommend with Firefox, you get the NoScript plugin.
Thanks all.
Dr. Dave, I may try Firefox.
Wolfhunter, I'm afraid I may be too old a dog to teach new tricks. Linix I know of, but have never heard of Ubuntu. And I don't want to learn a new system from scratch.
And unfortunately Red Hat, "Disable Script Debugging " is selected.