Install PhpUnit

Run the Windows Command Processor (cmd.exe).
Run >pear channel-discover pear.phpunit.de
Run >pear remote-list -c phpunit
You will see a similar screen:
CHANNEL PHPUNIT AVAILABLE PACKAGES:
===================================
PACKAGE VERSION
DbUnit 1.3.0
Diff 1.1.0
Exporter 1.0.0
File_Iterator 1.3.4
FinderFacade 1.1.0
Git 1.2.0
PHPUnit 4.0.1
PHPUnit_MockObject 1.2.3
PHPUnit_Selenium 1.3.3
PHPUnit_SkeletonGenerator 1.2.1
PHPUnit_Story 1.0.2
PHPUnit_TestListener_DBUS 1.0.0
PHPUnit_TestListener_XHProf 1.0.0
PHPUnit_TicketListener_Fogbugz 1.0.0
PHPUnit_TicketListener_GitHub 1.0.0
PHPUnit_TicketListener_GoogleCode 1.0.0
PHPUnit_TicketListener_Trac 1.0.0
PHP_CodeBrowser 1.0.2
PHP_CodeCoverage 1.2.16
PHP_Invoker 1.1.3
PHP_Timer 1.0.5
PHP_TokenStream 1.2.2
Text_Template 1.2.0
Version 1.0.2
bytekit 1.1.3
phpcov 1.1.0
phpcpd 2.0.0
phpdcd -n/a-
phploc 2.0.4
test_helpers 1.1.0
Run >pear install phpunit/PHPUnit-4.0.1
You will see a similar screen:
downloading PHPUnit-4.0.1.tgz …
Starting to download PHPUnit-4.0.1.tgz (510,701 bytes)
….done: 510,701 bytes
install ok: channel://pear.phpunit.de/PHPUnit-4.0.1