The following are instructions for enabling Hebrew character input on Windows XP. 

These have been tested on a PC running Windows XP Home Edition Service Pack 2. 

Hopefully they will work on any Windows XP PC.

 

Open up the Control Panel using the Start Menu. 

Open up Regional and Language Options in the Control Panel.  

Go to the Languages tab. 

If the checkbox for "Install files for complex script and right-to-left languages" is unchecked,

then check it and then press OK to the resulting pop-up message

and then press OK to exit the Regional and Language Options dialog. 

Once the installation of files for right-to-left languages is complete (this may involve restarting Windows),

open up Regional and Language Options again. 

Go the Languages tab.

Click on the Details... button under the heading "Text services and input languages"  to open the Text Services and Input Languages dialog. 

In that dialog, use the Add... button under the heading "Installed services" to add Hebrew. 

Next, click on the Language Bar... button under the heading "Preferences" to bring up the Language Bar Settings dialog. 

(If the Language Bar... button is grayed out and unclickable, press the OK button to close the  Text Services and Input Languages dialog, 

then immediately re-open the Text Services and Input Languages dialog.

The Language Bar... button should now be clickable.)

If the "Show the Language bar on the desktop" checkbox in the Language Bar Settings dialog is checked,

there will be a button on your screen (perhaps at the lower right or lower left) which is labeled EN (for English) or HE (for Hebrew).  

You can click this button to switch between English and Hebrew entry.

Press OK to exit the Language  Bar Settings dialog.

Next, click on the Key Settings... button in the Text Services and Input Languages dialog to bring up the Advanced Key Settings dialog.  

This will show you a key combination  (the default is Left Alt + Shift)

which you can use to switch between English and Hebrew  entry without having to click on the EN/HE button. 

If you don't like this switching-using-keys feature (it can result in switching languages by accident)

then you can use the Change Key Sequences... button to bring up a dialog in which you can disable that feature or choose a different key combination. 

(The Change Key Sequences... button can also apparently be used to set a key combination for switching keyboard layouts.)

Press OK to exit the Advanced Key Settings dialog and and then press OK to exit the Regional and Language Options dialog.
 

 

If you need a keyboard map, open the Start Menu, then click on All Programs, then on Accessories,  then on

 Accessibility, and then on On-Screen Keyboard.  This will display a keyboard map for the input language currently

 selected in the language bar. Hebrew keyboard maps can also be found via search engines such as Google.