To Read Malayalam Unicode in Windows with Internet Explorer:
(1) Download AnjaliOldLipi.ttf and save the file in Desktop.
Copy the AnjaliOldLipi.ttf font file and paste to Local Disk (C:)Windows, Fonts folder.
(2) Click Start, Control Panel
Double click on Internet Options, click on Fonts and Select Language Script Malayalam. Then select Web page font as AnjaliOldLipi.
Press OK and OK.
To Write Malayalam Unicode, you have two choices:
Downlaod Varamozhi Editor
In Varamozhi Editor Click File -> Export to UTF8 (unicode)
Or, Download Mozhi Keyamap
Please see the FAQ for support.