I have no idea....
Are there any magic entries in <module>/metadata/SearchFields.php to define the ability to do it?
Help, Help, Help....

Wojtek.

Server:
SugarCrm 4.5.0f OS,
Linux Debian,
Apache 2.0.55,
mysql 5.0.20,
php 5.1.2

Client:
WinXp
Mozilla
Edit/Delete Message