Safety.
back up all the date
Windows XP is a good operating system, but it's old. And if your hardware allows you to run Windows 7, install you will not regret it.
the answer to that one is prob. in your textbook
Test with a network cable
A person should install a PCIe network adapter in the PCIe network slot on a pc. The PCIE network adapter allows the PC the ability to connect with the Internet.
to keep it up to date and to let it install any virus protection programmes
Between the cable modem and the workstations.
A category 3 cable is totally inappropriate for a modern network. You should install at least category 5.A category 3 cable is totally inappropriate for a modern network. You should install at least category 5.A category 3 cable is totally inappropriate for a modern network. You should install at least category 5.A category 3 cable is totally inappropriate for a modern network. You should install at least category 5.
It means you have an upgrade version, you should have an older version in order to install the upgrade version.
Under normal circumstances, this should appear only when you are installing a new piece of hardware. The wizard itself explains how it will help you. You should have available the driver software for the hardware you are trying to install.
Vista should run the latest games with the proper hardware so it should be able to run Call of Duty 2, of course you may not have the required drivers or hardware and may need to upgrade.
If the hardware is compatible and you have enough memory you should be able to purchase an "Upgrade" version of XP.