Hi,
If you are using Exchange account, you can try to publish custom form to Organizational Forms Library. Publish the form to this library if you want to make the form available to everyone in your organization, such as a form to report vacation time.
More detailed information you can refer to this link:
http://support.microsoft.com/kb/290802
Note: Make sure you have permission to publish from to Organizational Forms Library. If not, contact Exchange admin.
"How to create an Organizational Forms Library in Exchange 2007"
http://support.microsoft.com/kb/933358
Best regards.
William Zhou
TechNet Community Support
