Oh I just remembered on more thing: Click on the Zimlet in the over-view pane and check "Enable 'Attachment Alert' Zimlet (Changing this would refresh browser)" checkbox.

Did that when I initially...

Preference > Zimlets - It is enabled (checked)
Compose-in-new-window - Nope, in the main Zimbra window

Tested the words 'attach', 'attachment', and 'attached' in an email to myself. Didnt work :(

"Deployed" the zip file in Zimbra Admin, didnt select "flush zimlets" and enabled it on my account....

I was wondering if there was a Zimlet that emulated gmail's check for attachment functionality? I did a search and didnt find anything, but perhaps I missed it.

Something like this:
...

In Outlook under File->Open->Other users mailbox?

edit: Always use FQDN's kiddies. Seems that mail would resolve to a hostname but calendar sharing wouldnt work without setting it as...

When I share the calendar specifically to a user, under that specific users Outlook I can open the calendar via File Open Other User's Mailbox. However, when I set the share permissions to public, or...

I have a similar issue along these lines. I have a calendar shared to the public and outlook will not open via this method.

I've created a set of resources to be used as meeting rooms. I can modify permissions on the calendar to share to individual users which can be opened in Outlook by that user (File->Open->Other Users...