I dont know if this post can be posted here but i seemed to be the most appropriate. So my issue:
I lost my nonexpansion D2CD, and Im asking that if I can download a torrent nonexpansion d2, then buy LEGIT CD KEY FOR FG, and still be able to play on bnet?
thaks for the infos in advance.
sry for bad english, if it is

why not download it legally?
http://forums.d2jsp.org/topic.php?t=32373257&f=21

and buying a cd key for fg is illegal
talking about torrents is illegal
http://forums.d2jsp.org/info.php?p=9

First of all, piracy isn't suppored here. Secondly, you can't buy a CD key for fg since it's not allowed and lastly, I would suggest you to buy a brand new cd key from the blizzard store and use this guide: Diabloii Download Guide