Problems with Lenny Installer

[Khristian <der.kosak@gmail.com>]

I'm trying to install lenny amd64 here, but the installer doesn't
recognize my hard disk as already partitioned when I choose the manual
partitioning (it simply shows an unpartitioned 250GB disk). I tried
going through the graphical and text installers (both normal and
expert), but nothing changed.
Couldn't find a bug in the debian-installer bug reports page that
looked similar to this, so I'm turning to this list for help. Any
ideas?

Thanks,

-- 
Khristian Alexander Schönrock
http://derkosak.blogspot.com - Meu blógue!