HOw to automate load of users (ldif file) in Sun One for Cognos 8.4

[lena]

HI

We have a policy that user name /password has to be changed every 30 days.
We are using Sun One & Cognos 8.4.
I can do it in Sun, but I do not know how to add prompt for user to enter new password in Cognos Connection.
The only idea I came up with is to create ASP page where user will be prompted to changed password & write back to SQL Server 2005 data base, using later that data load it into SUn One (how to automate this ? ) & later user from ASP will be redirected right to home folder page with new credentials.

Please advise if you know how to automate ldif load into SUn One

thank you

Lena