use a friends cd?

[Whisp]

I have a problem when i try to download the first disk for FFXI i get these File error. It's with my Data1.cab file. The file that i can't get is the ??mov/mov999 or something like that... if i goto explore it's the 2nd to the last FILE! i've tried redownloading millions of times. however if it fails and i goto abort ill then try to redownload i get some POL1667 error or something. so i reformat hard-drive... the only solution that i can come up with is use my friends CD. I currently have his playonline cd. I don't know who's is who's! stupid of me got em mixed up. However i can download play online. But i always check for file errors and i get some. i don't care about that i just wanna play the game.

However if i take his final fantasy disks can i download the game?? and still play? The Play online customer support # i called told me to goto explore and copy/paste each disk on my desktop into a different folder. Then make 1 folder and put them all in it. goto the first disk and run setup.. i do that and i still got the same error!