depending on the size, it 'might' even be better to 'upload' it to some storage site, and tell the recepient where to download it. There are now a number of such sites.

http://www.xdrive.com/ is one...5 gigs free. http://box.net/ is another...1 gig free.

Here is a discussion and listing

http://www.extremetech.com/article2/0,1697,2098943,00.asp