It's not crucial to upgrade right away but W8 provides a lot of new features and we all have to adapt with the ever running speed of technology.
People cannot legally get a free Windows 8 upgrade.
You do not have to upgrade to Windows 8 at all, but some people perfer to be updated with the latest softwares.
i think so you can, you need an older version to start the upgrade process to Windows 8
Buy a Mac
Unfortuantely, Windows 8 will not release a preview upgrade to Windows 8 Pro. However, a person can probably download a demo copy of the operating system or simply look at the specs for the software to see if it's worth upgrading.
Windows 8 is not free since the upgrade is for new computers. If you want to upgrade you will need to pay the full price.
If you already have Windows 8, you should upgrade to 8.1 as it offers the latest features and is viewed as more user friendly than previously. If you do not already have Windows 8, look at the changes from previous versions of Windows to Windows 8 and decide if its right for you; many people still prefer Windows 7.
You can have an upgrade from microsoft or buy windows 8.1 and upgrade the system from there (be sure to back up your important data) or you can just format the whole windows partition and install Windows 8.1
There is not a way to upgrade Windows 8 release preview to Windows 8 Enterprise Evaluation. You will need to install Windows 8 Enterprise Evaluation in order to use it.
No you have to buy it installed into the computer unlike windows which you can upgrade with a disc (I did when windows 8 came out).
Windows XP Professional is an upgrade to Windows 2000 Professional. Windows Server 2003 is an upgrade to Windows 2000 Server.
QuickBooks Pro 2007 will work in Windows 8. However, you will need to pay for an upgrade to get it to work.