Downloading and installing the DIY Calculator onto your IBM-compatible PC is very easy as discussed below. Note that you need at least 7 megabytes of free space on your hard disk drive; also note that your computer should be running Microsoft® Windows® 2000, ME, XP (home or professional), or later.

1)	If you haven’t already done so, click the DIY Calculator icon that you’ll find on the Downloads page, select the Save Target As command (or equivalent) from the ensuing pop-up menu, and save the associated setup.zip file to the My Downloads folder on your computer.
2)	Use an appropriate UNZIP utility to extract the setup.exe file from the setup.zip file. On most systems you should simply be able to open up the My Documents \ My Downloads folder; double-click on the setup.zip file to access the contents of this file; single-click on the setup.exe file to select it and then use the Edit > Copy command; click the Up icon on the browser tool bar to return you to the My Downloads folder; and then use the Edit > Paste command to paste a copy of the setup.exe file into this folder. (If you don’t have an UNZIP utility on your system, there are several around such as the one from www.WinZIP.com.)
3)	Double-click the setup.exe file to launch the DIY Calculator Setup Wizard and initiate the setup process, then click the Next button to continue.
4)	For the purpose of these discussions, we will assume that the letter associated with your main system drive is C: (substitute the letter used by your computer if this is different). By default, the DIY calculator will be installed in a folder called C:\DIY Calculator. It is recommended that you use this default location, but you may use the Browse button to select a different target location if you wish. When you are ready, click the Next button to continue.
5)	By default, the installation will insert a shortcut called DIY Calculator in your Start > Programs menu. It is recommended that you use this shortcut name, but you may specify a different name if you wish. When you are ready, click the Next button to continue.
6)	If you wish to have an icon associated with the DIY Calculator placed on your desktop (this is recommended), ensure that the appropriate tick-box is selected, and then click the Next button to continue.
7)	At this point you will be presented with a dialog window showing a summary of the installation options you have selected. If you agree with these options, click the Install button to complete the installation.
8)	The final dialog in the setup wizard allows you to use a tick-box to specify whether or not you wish to launch the DIY Calculator at this time. Make your selection and then click the Finish button when you are ready to continue.
9)	In order to launch the DIY Calculator in the future, you may use the Start > Programs > DIY Calculator > DIY Calculator command, or you may double-click the DIY Calculator icon on your desktop (this assumes that you opted to have this icon placed on your desktop as described in point (6) above).

Although the DIY Calculator can run on a screen resolution as low as 800 x 600, you will quickly discover that things get a little crowded on the display. Thus, it is strongly recommended that you set your resolution to 1024 x 768 or higher.

The quickest and easiest way to change your screen resolution is to point your mouse cursor at a blank area of your desktop (the background screen image) away from any applications or icons, right-click on the desktop, and then select the Properties item from the ensuing pop-up menu. Next, click the Settings tab, change the Screen Resolution setting, and click the OK button.

As soon as you invoke one of the utilities such as the Memory Walker, CPU Register, or I/O Ports displays, it is recommended that you immediately drag the display (using its blue title bar) away from the main calculator front panel and locate it in a clear area of the interface. (Note that you can also resize the Memory Walker in a vertical direction so as to make more rows of data visible.)

The reason we suggest this is that, if you inadvertently click the front panel when one of the other utilities is “on top”, the front panel will “come forward” and may completely obscure the other utility. Should this occur, you can drag the calculator front panel around the screen with its blue title bar until you see a portion o f the hidden display. Clicking on any part of that display will bring it to the foreground, at which point you can drag the display to a clear area of the interface.

This is similar in concept to the previous point. The assembler is an independent executable application (program) that is launched from within the main DIY Calculator interface. When you click on any part of the DIY Calculator interface after you have launched the assembler, then the main interface will “come forward” and may completely obscure the assembler. Should you lose the assembler in this way, you can click the Assembler item in the main Windows® taskbar to bring this application to the foreground. (Just in case you were wondering, the words "lose" and "losing" are derived from the Old English losian, meaning "to perish.")