The following is with the Blackberry Internet Service
(BIS) unless noted otherwise:

Can I view file attachments on my device?
Yes, if attachment viewing is enabled for your
BlackBerry device. When you receive a message with
an attachment, click the trackwheel. If Open
Attachment appears in the menu, you can view
attachments on your device. If Open Attachment does
not appear in the menu, your device might not be
enabled for attachment viewing. (Use desktop manager
and be sure to install the Blackberry attachment service)

You can view several types of file attachments on your
BlackBerry device, including .zip, .htm, .html, .doc,
.dot, .ppt, .pdf, .wpd, .txt, .vcf, and .xls files. You can
also view .bmp, .gif, .jpg, .png, and .tif image
attachments.

If your device is integrated with an account that uses
BlackBerry Enterprise Server version 4.1 or later, you
can view .wmf files on your device.

To view document and spreadsheet attachments, your
device must be integrated with an account that uses
BlackBerry Enterprise Server version 3.6 or later for
Microsoft Exchange, BlackBerry Enterprise Server
version 2.2 or later for IBM Lotus Domino,
BlackBerry Enterprise Server version 4.0 or later for
Novell GroupWise, or the BlackBerry Internet
Service.

To view .zip, .htm, or .html attachments, your device
must be integrated with an account that uses
BlackBerry Enterprise Server version 3.6 Service Pack 1
or later for Microsoft Exchange, BlackBerry Enterprise
Server version 2.2 Service Pack 1 or later for IBM Lotus
Domino, BlackBerry Enterprise Server version 4.0 or
later for Novell GroupWise, or the BlackBerry Internet
Service.

To view image attachments, your device must be
integrated with an account that uses BlackBerry
Enterprise Server version 4.0 or later or the BlackBerry
Internet Service. Contact your system administrator
or service provider for more information.

How do I view password-protected file attachments?
You can only view password-protected .pdf files. If you
receive a .pdf file that is password-protected, you must
type the password to view the file. On the attachment
screen, click the file name. Click Password. Type the
password. Click the trackwheel.