How do I dynamically change "string" value of attribute modified or added to slapd?

[mihokm <mihokm@extel.sk>]

I have the following problem.
Mail server CommuniGatePRO puts user attributes to LDAP server slapd. It 
sends crypt password in form UserPassword \002<encoded paswords>. 
However, other programs like PAM modules, expect pasword in form 
{crypt}<encoded password>. What I need is to replace string \002 (slapd 
interprets it as 02 hex) with {crypt}. The process must be dynamical, 
i.e. it must be replaced while it is added or modified.
Sincerely, yours,
Marian Mihok