can't get libc6-dev

[clement <clement.delalande@free.fr>]

hi all,

i'm pretty new to this list (and in debian 64 world !), but when i try
to install libc6-dev i've got an error (translation) : 
Following packages have unmet dependencies :
  libc6-dev: Dépend: libc6 (= 2.3.2.ds1-20) but
2.3.2.ds1-20.0.0.1.pure64 should be installed
but i can't find the mentionned packages. I try to install libc6-dev
in /emul/ia32-linux and run ldconfig but gcc still not found stdio.h

Youre advices will be useful before i crash my system.

manny,thanks
clement