checkbox on the security tab unavailable

G

Guest

Hi,

i'm using outlook express 6. from couple weeks the
checkbox "block attachments that may potentially contain
virsues" on the security tab is unavailable (is grey), so
i can't save lots of attachments. How can i make the
option available again, so i could uncheck the box?
(i'm using win xp with sp1)

Thanks
 
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