Tasa Portfolios, Tasa Photo CD-ROMs, and the Illustrated Dictionary of Earth Science require the Classic environment when using Macintosh OS X. Before starting one of these Tasa programs, be sure to start the Classic environment. Check the System Requirements (on the program's webpage) to determine if a program requires the Classic environment.

You cannot use Classic applications on Intel-based Macintosh computers because the Classic environment is not supported.

Tasa Portfolio and Photo CD-ROM images can be viewed on OS X Macs, by opening the image folders and putting the folder in column view.

1. Select System Preferences from your Dock.
2. Click on the Classic icon.
3. Click on the Start/Stop tab.
4. Click the Start button.

By automatically starting the Classic environment, all OS X applications will run normally and OS 9 applications will run in Classic mode.

1. Select System Preferences from your Dock.
2. Click on the Classic icon.
3. Click on the Start/Stop tab.
4. Put a check in the ‘Start Classic when you log in’ box.
5. Quit System Preferences.

Here are the necessary steps:

1. Open the Applications (Mac OS 9) folder on your hard drive.
2. Open the Desktop Printer Utility in the Utilities folder.
3. Select your printer type from the pop-up list.
4. Select the type of connection from the list under Create Desktop (i.e. Printer (Apple Talk)).
5. Click OK.
6. Select a Printer Description (PPD) file by clicking the change button.
7. Select a Printer by clicking the change button next to Printer Selection.
8. Click to highlight your printer and then click the OK button.
9. Click the Create button.
10. Click the Save button.
11. Quit the Desktop Printer Utility.