In general, Outlook custom forms from one version will work in another. You should test thoroughly, though, since each version provides its own quirks.

--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx

"Nat" wrote in message ...
This is probably a silly question, however we have current Outlook forms,
which we currently use at our organization. Users are currently using either
XP, 2000 or 2003 to access these forms. My question is this, if we upgrade
our version of Outlook to 2007, will these older forms function properly?
Can they be "converted" or do they need to be recreated? We have forms which
tie into people's calendars, and send out reminders and that is why Outlook
has worked in the past for us.

Thanks in advance...