Exchange 5.5 and Exchange 2000 sharring global address book?

[RRM]

Hi all,

This is my problem.

We have exchange 2000 running at a remote site and our main site is running exchange 5.5 with a view to upgrading next year, however it is necessary to have a global address list shared between the two sites.

Has anybody done or have any knowledge of how to do this?

Thanks in advance for any help.