[users] Opening email attachments

[Susan Martin]

My boss claims to be unable to open any of the emails I have sent.  Attached 
Files are generated with OpenOffice 2.0 Calc and Writer and I am able to email 
to myself at an alternative email address and have no problem.  Does anyone 
have any ideas???   My operating system is Windows 2000 and I utilize Yahoo! to 
email.  I thank you in advance for your time and cooperation
 
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Everyone is raving about the  all-new Yahoo! Mail.