What do you see in the Registry under
HKEY_CURRENT_USERSoftwareClientsMail?

For Thunderbird to be used, you should see

(Default) REG_SZ Mozilla Thunderbird

--
Hope this helps.

Please reply to the newsgroup unless you wish to avail yourself of my
services on a paid consulting basis.

Doug Robbins - Word MVP, originally posted via msnews.microsoft.com

"Jim S" wrote in message
...
My default mail client is Mozilla Thunderbird.
If I attempt to send a file from Word (2007) as attachment T'bird just
opens with no new email with attachment window. It works fine with Wordpad
and Publisher. Is there a known problem with Word/Thunderbird?

I have tried T'bird in Safe Mode to exclude extension problems.
It works OK with Outlook and Seamonkey, but then they are not my mail
clients.
--
Jim S
Tyneside UK
www.jimscott.co.uk