If you want 1.10 for the original Diablo 2, click here:
http://ftp.blizzard.com/pub/diablo2/patches/
If you want 1.10 for the "Lord of destruction" expansion, click here:
http://ftp.blizzard.com/pub/diablo2exp/patches/
Im afraid you will have to re-install diablo 2 though.