I need help, please!

First question:
I have on my 770 a pop3 account in claws-mail and have ticked not to deleate mails from the server, because I want to receive them later at my PC again.
Now, when I deleate the mails within the email-prog of my PC on the server, and start claws-mai on my 770 for the next time and go for receiving new mails, those I have deleated from the server with my PC are there still in claws-mail! As I understand, deleating from the server means, that those mails do not exist anymore, but why don´t they dissappeare in claws-mail?

Second question:
When I receive doc-file attatchments and I click at "open with" and I select "docviewer" or or select "antiword", nothing happens, they do not get opend. With excel-Attachments and gnumeric it works! What am I doing wrong?

And please apologize my bad english......