Does the target machine have a network / internet connection ?
Can you download the CDs ?
Can you download 1 cd ?
If you only want to download 1 cd then do the following:
Download the boot.iso and burn it to cd
boot the target computer with the cd in it.
You will get a menu that asks where to find the files
It asks for the address of the images, so give it this one
This will work for a 32 bit install, if you want a 64 bit install, change i386 to x86_64 in both the URLs above.