Feature transfer error?

well after having the game unistalled for some time i decided i wanted to play agian after seeing the new expasion.

get to disk 2 load and about 3/4 the way through i get this

Feature: Defualtfeature
Component: Civ4Component
File: D:\data3.cab
Error: Data error (cyclic redundancy check)




click OK as its the only option and it exits the install. tryed a few times, tried cleaning the disk and nothing. My cd's don't look to be scratched.

is there a way that i can get the files online?