Office 2007 introduced the "Trust Center," an area within Word Options to configure various security settings. Some of these settings are critical if you use files on a server (for instance, newmisserver), or if you want to be able to use macros in your documents.

To allow access to files on a server do the following:

1. Go to Office Button-->Word Options, and select "Trust Center" from the panel on the left. 
2. Press the Trust Center Settings button on the right hand panel.
3. Select "Trusted Locations" from the list at the left.
4. At the bottom of the right-hand pane, make sure "Allow trusted locations on my network (not recommended)" is checked.
5. Select the "Add new locations..." button. This will bring up a browsing window that will allow you to navigate to the folders you use.
6. Select the folder containing the document(s) you want to be able to access. If you would like to be able to use subfolders within that folder, make sure the "Subfolders of this location are also trusted" box is checked. When you are ready, click "ok," and then ok the changes to the Trust Center.

To enable the ues of macros in your documents:

1. Go to Office Button-->Word Options, and select "Trust Center" from the panel on the left. 
2. Press the Trust Center Settings button on the right hand panel.
3. Select "Macro Settings" from the list at the left.
4. Choose what level of macros you would like to enable. If you're using commercially developed macros, you can assume they are digitally signed. Macros created internally probably are not digitally signed and need the loosest level of security, so select "Enable all macros," despite the dire security warnings.
5. "OK" your way out of the Trust Center and Word Options.