Figure 6.1. To install software, you need certain permissions. XP-certified programs give these clear instructions, but older Windows 9
x programs may display a vague or puzzling message when you try to install them. XP allows a Limited user or Guest to log on as an Administrator to install a program.
Set a restore point first. Create a System Restore point before you install new software that you don't quite trust. If the new program causes problems, you can undo the installation and return your system to its previous working condition. See "Restoring Your System" in Chapter 19.Make sure the program is XP-compatible. XP is compatible with fewer programs than Windows 9x but more programs than Windows 2000. Look for an XP compatibility statement or the "Designed for Windows XP" logo on the software's package or web site (and look for patches or updates while you're there). You also can check Microsoft's web site for XP-compatible programs: Choose Start > Help and Support > Find Compatible Hardware and Software for Windows XP; then search for your program.Close open programs first. Running Older Programs" later in this chapter.If you upgraded from Windows 2000, Power Users group members, in addition to Administrators, can install programs.These days you install most commercial software from a CD. XP's AutoPlay feature runs the CD's Setup program automatically when you insert the CD into its drive. But you can use Control Panel to add programs if AutoPlay is turned off, you're installing from a floppy, or AutoPlay can't find the Setup program.To install a program from CD or floppy disk: 1. Choose Start > Control Panel > Add or Remove Programs.2. Click Add New Programs.3. Insert the program's setup disk into the CD or floppy drive.4. Click CD or Floppy (Figure 6.2 ); then follow the prompts that appear.
Figure 6.2. Experienced users avoid this installation method; it's quicker to double-click the disk's Setup program (typically, setup.exe) in Windows Explorer.
Windows usually can find the Setup program, even if it's not in the top-level folder or named setup.exe; it may be an .ini or .inf file instead. TipsSetup programs usually require you to specify a destination folder, accept a license agreement, choose which components to install, and type a serial number or product key from the CD's envelope or registration card.Software publishers create Setup programs with third-party programs such as InstallShield, Wise Installer, or Microsoft's Windows Installer, so you'll see those program names in title bars.After installation the program's shortcuts are highlighted in orange in the Start > All Programs menu. To turn off highlighting, right-click the Start button; then choose Properties > Customize > Advanced tab > uncheck Highlight Newly Installed Programs.If you're on a workplace or school network, the Add New Programs tab may contain a list of Administrator-approved programs available for installation.Most programs include a Click Here for Support Information link in the Add or Remove Programs dialog box. Click this link to display technical support information (Figure 6.3 ).
Figure 6.3. Support information usually includes the software company's name, the program's version number, and links to relevant web pages.
Who Can Use the Program?
A program that youor any Administratorinstall is available to all users by default; its shortcuts appear in everybody's All Programs menu. Sometimes shortcuts end up in your personal All Programs menu because you (inadvertently) told Setup to do so or because Setup gave you no choice. Recall from "Using the Start Menu" in Chapter 2 that XP inspects two folders to build the All Programs menu: one for All Users and another for the logged-on user. To make a program available to everyone (instead of only you), do the following: 1. Choose Start > All Programs.2. Right-click the item (icon) that you want everyone to be able to access; then choose Copy.3. Right-click Start; then choose Open All Users.4. Right-click the Programs folder; then choose Paste. Now the program appears in everyone's All Programs menu. If this method doesn't work, or if a program requires per-user settings, log on to each user account and rerun Setup.Chapter 13) to download any of the thousands of commercial, shareware, demo, and free programs (and updates) available at vendors' web sites and at independent sites such as www.download.com and www.tucows.com.To download and install software: 1. In Internet Explorer, click a link that initiates a download.2. In the File Download Security Warning dialog box, click Save (Figure 6.4 ).
Figure 6.4. This dialog box appears when you click a link to download a file. Blame virus writers worldwide for the paranoid tone of the message.
3. In the Save As dialog box, select a destination folder for the download (Figure 6.5 ).
Figure 6.5. Choose or create a destination folder where you won't lose the downloaded file. Desktop isn't a bad choice, but it's better to create a dedicated folder for all your downloads.
The download almost always will be an executable (.exe) file or a compressed (.zip) file.4. After the download completes, double-click the file in Windows Explorer.If the download is an executable file, Setup starts automatically. If it's a Zip archive, extract its files (see "Compressing Files and Folders" in Chapter 5); then look for a read-me file (readme.txt or readm227) or double-click the installer program (usually named setup.exe) among the extracted pieces. Updating Windows XP" in Chapter 19.Some software download sites let you install a program directly online rather than locally from a downloaded file. Installing locally gives you more control and leaves you a copy of the program if you have to reinstall.