Firstly, the handwriting functionality will not be available if you have Windows 95, 98 or ME. It will work on Windows XP and possibly on Windows 2000, but it is possible that it won't work on Windows 2000.
If you have MSN Messenger 6 then you'll need the plugin and the ink redistributables. More information on how to install then can be found at
Ink/Handwriting Plugin Everything you need to know right here.
If you have MSN Messenger 7 then you'll only need the ink redistributables (or the Windows Journal Viewer). They can be downloaded from
http://www.kaonet.net/page.php?id=75. Make sure you install them for all users.
See
Need help with "Handwriting" for more information
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