If you have the libraries needed add the
when compiling PHP.
Note to Win32 Users:
win32 support is available only in PHP 4.3.3 and later versions.
Also, you must have aspell 0.50 or newer installed.
In order to enable this module under Windows, you must copy
aspell_15.dll from the bin folder
of your aspell installation to a folder where PHP will be able to find it.
C:\PHP or the SYSTEM32 folder of
your windows machine (Ex: C:\WINNT\SYSTEM32 or C:\WINDOWS\SYSTEM32) are good choices.