wmv download from email

>-----Original Message-----
>When I receive an email of a movie it is brokem down
into
>section with names such as; newvid.wmv(1/3), newvid.wmv
>(2/3), newvid.wmv(3/3)
>
>The first section downloads ok but the others download
as
>messages.
>
>What is going on here and how can I get the other
section
>to download properly?
>.
>