LDAP Schema for Outlook and Thunderbird

Hi. I’ve been experimenting with the Notes 6.5.3 LDAP server, in particular making entries in the NAB available to Outlook 2003 and Thunderbird clients. This works, except in the details. In particular Outlook can’t see the Company Name, and Thunderbird can’t see the Company Address. Reasons are that Outlook is looking for ‘organizationName’ and Thunderbird is looking for ‘streetaddress’. The former is an alias in Domino LDAP schema, the latter doesn’t exist. I can change the schema of course, but to do so whilst preserving the ‘dominoPerson’ class and therefore the visibility of these entries to Domino seems to involve deleting and then recreating this class entry, which I really don’t want to do. On the offchance that someone else has come across this problem, what’s the best way to proceed?

PS: what exactly are LDAP aliases, can I create, edit or delete them?