>Now that helps me understand why you probably did not just install the
>Linux O/S to replace the Windows O/S on your wifes computer. If I were
>to try to replace my WinXP with one of the Linux programs I might find
>problems running some of these applications, and if I had to change
>applications, would the tens of thousands of files which were created
>by those Microsoft programs work in the replacement programs?
>
>MS calculator plus
I'm not familiar with this one, however there a dozens of good calculators for Linux, ranging from scientific to financial.
>MS office
>MS works
This is easy... Open Office is free and will work with most Microsoft Office and/or Works file formats. If you need even better compatibility (e.g. Open Office's spreadsheet graphs don't come out looking like Excel's), then you can buy SoftMaker Office for <$100 USD.
>MS streets and maps
Google Maps?
>MS office small business tools
I've never used any of these, but I'd be surprised if there weren't something equivalent in the Linux world. Whether the Linux equivalent would be file compatible is another issue. For example, instead of MS Project, I use GanttProject. It's free (and there's even a Windows version), but it only works with its own .GAN files or .XML files which may be exported from MS project.
>MS games
There are clone versions of almost any popular game you can think of. How well the clone matches the original varies from game to game.
>MS paint
GIMP (or GIMPshop) are the best known but there are others. All work with all standard graphics file formats.
>MS picture it
>MS beta client
I have no idea what these are.
>MSN Explorer
>MSN gaming Zone
>MSN messenger
Since MS owns MSN, the odds are that some MSN things may not be compatible. OTOH, using Pidgin - a universal IM client that can talk with MSN, Yahoo, AOL/AIM, Google, ICQ, IRC, MySpace, and other IM systems - I can IM almost anyone anywhere.
>Windows Explorer
I prefer Total Commander on Windows. On Linux I use either Krusader (Krusader integrates a file manager and web browser in a single application), EmelFM2, or Konqueror. If you want something that looks like MSWE, try Thunar or Nautilus. There are many others.
>Windows messenger
Pidgin (see above).
>Windows media viewer
Too many options to enumerate.
>Windows journal viewer
Don't use it, don't know.
>Windows defender
Malware is much less of a problem when running Linux. Windows' market position makes it a much more attractive target for malware writers. Linux comes with a really good firewall, and you can add antivirus and anti-spyware tools if you like. ClamAV is the best known, but there are others. AVG 7.5 is available for Linux.
>Windows movie maker
See my comments on Windows Paint. There is no shortage of Linux multimedia creation and/or editing software.
>Outlook Express
The problem with Windows email clients is that they don't use standard file formats. There are some great Linux email clients, but importing your existing mail from Outlook express will be a chore. Arguably the best email client for Linux is Mozilla Thunderbird. Evolution and Kmail are also popular. If you want something simple and integrated, check out Opera for Linux.
>Internet Explorer
Mozilla Firefox has already stolen a large chunk of MSIE's customer base and tuns great on Linux. There are others, e.g. Opera.
>Is there a possibility that some other software brands might also
>have difficulty? I rely heavily on Adobe, Delorme, Google Earth,
>Creative, Nero, Sony, Kodak, Jasc, Paperport, Broderbund, and others.
Some of these will be easy, others less so. In the end, there's always the virtualization option. Wine is a Linux application that allows users to run native Windows applications under Linux. It can work very well or not at all or somewhere in between. If you load Virtualbox for Linux, you can install Windows as a guest operating system running under Linux. The commercial equivalent is VMware. If you have only a few "must have" applications, these might be worth considering.
>If a person wants to change to Lindows or an other of the Linux O/S
>is there an upgrade disk available or would they have to do a clean
>install?
You'd need to do a clean install. As far as choosing among the myriad Linux distributions, if you're used to Windows, I'd recommend you look first at PClinuxOS (PCLOS), which is the most Windows-like, or Kubuntu which offers the best balance of power and Windows look and feel. As a result of legal actions by Microsoft, Lindows is now Linspire. It's OK, but overall, I've never been too impressed by it. PCLOS does a much better job of making a Windows user feel at home in Linux. The downside of PCLOS is that its installation repositories have far fewer applications to chose from than any of the Ubuntu distributions (Ubuntu, Kubuntu, Xubuntu, Eubuntu, et al). Ubuntu is built on Debian as its base distribution, while PCLOS is built on Mandriva. Linspire is built on Ubuntu.