This is a plugin I wrote for Gossamer Community, maybe it would be of some use? http://www.ultranerds.com/.../BirthdayEmail_L155/ (Gossamer Community is free).
If you have any questions, please let me know (I could port this over to Gossamer Forum for you, for a fee - so please contact me if you didn't want to go down the Gossamer Community route).
Cheers
Andy (mod)
andy@ultranerds.co.uk
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