Assuming you mean Outlook 2007, make sure you are NOT using Microsoft Rich
Text Format for your default email format. RTF is ONLY understood by
Outlook and any other email client will either get an attachment with the
name WINMAIL.DAT (which they cannot open) or they'll get no attachment at
all. Avoid this by using either HTML or Plain Text for your email format
whenever sending to someone that is not also using Outlook.

http://support.microsoft.com/?kbid=287720
OL2002: Attachments Are Not Visible to Some Recipients When You Use TNEF
http://support.microsoft.com/?kbid=290809
OL2002: How Message Formats Affect Internet Mail
http://support.microsoft.com/?kbid=197064
OL2000: (CW) Winmail.dat Attachments Included in Received Messages
http://support.microsoft.com/?kbid=224817
OL2000: Transport Neutral Encapsulation Format (TNEF) Basics

Decoder programs to read a WINMAIL.DAT file are he

http://www.slipstick.com/addins/decoders.htm
Decoder Tools

Hal
--
Hal Hostetler, CPBE --
Senior Engineer/MIS -- MS MVP-Print/Imaging -- WA7BGX
http://www.kvoa.com -- "When News breaks, we fix it!"
KVOA Television, Tucson, AZ. NBC Channel 4
Live at Hot Licks - www.badnewsbluesband.com

"Santa Claus" Santa wrote in message
...
When i send a pdf file to a non xp2007 user, they are unable to open the
file. I was told it is possible to send a pdf file but there is a certain
way
to do it. Does any one know how? KDM