Desktop environments for Linux:

There are two main desktop environments for Linux, Gnome and KDE. Try them both and see what suits you best. I prefer KDE but that's a personal choice again. There is a project under way to combine the best of each of these two environments into a single universal version.

As far as applications go, you'll need an office system - OpenOffice.org is probably closest to the Microsoft Office you are used to (except for the macros) but there are others. I like KOffice but I got into it before OpenOffice.org was available. All the Linux distributions provide a web browser - Konqueror is quite close to Internet Explorer and Windows Explorer - or you can use any of the open source browsers, Firefox, Opera, Netscape, etc. Kmail is a lightweight email client but again, any of your preferred open source clients have Linux equivalents, Thunderbird, Opera mail, etc. If you work with a lot of digital images, you will want to get to know The GIMP - it has all the functionality of Adobe's Photoshop without the hundreds of dollars price tag! Like Photoshop, it isn't the most user friendly application but as you learn to use its power, that's a small penalty to pay.

Security on Linux systems is in a different league to Windows - it was always designed as a multi-user networked system, unlike Windows single user standalone desktop origins. All Linux systems have an inbuilt two way firewall that you can configure to your own specific requirements. There have been very few viruses targeting Linux but as its popularity increases, that will undoubtedly grow, though that said, it is much harder to break Linux security. Whether you should include an anti-virus application is a matter of heated debate (which I won't encourage here) but what harm can it do?

The beauty of Linux is that you can start simply, use the GUI, never even see a command line unless you want to. But as you get to know it and grow with it, you can branch out into the more powerful features as you need them.

Should you get rid of Windows XP altogether? My advice would be no, at least to begin with. As you explore Linux, you may come across an application you use that you can't find a Linux equivalent for, so having a Windows system to revert to is a good safety net. You have a licence for it anyway, so apart from the disk space, it's no loss to keep it until you have stopped using it altogether. I still use both for client compatibility, which is another reason you might want to keep XP,

I hope that's given you a few ideas to think about - you've nothing to lose - it's almost all free - as the SuSE Linux installer used to say - Have fun! Good luck.