Need help, superblock on reiserfs corrupt

[FAU <fau@spamgourmet.com>]

Hello,
my Debian (stable version) crashed and has corrupted my reiserfs 
partion. Can´t boot/mount it anymore :(.

I started Knoppix from CD and
I tried reiserfsck /dev/hda2 and it tolds me:
"If the partition table has not been changed, and the partition is
valid  and  it really  contains  a reiserfs  partition,  then the
superblock  is corrupted and you need to run this utility with
--rebuild-sb."

Ok then I tried it with the --rebuild-sb switch and it ask me:
"what the version of ReiserFS do you use[1-4]
        (1)   3.6.x
        (2) >=3.5.9 (introduced in the middle of 1999) (if you use 
linux 2.2, choose this one)
        (3) < 3.5.9 converted to new format (don't choose if unsure)
        (4) < 3.5.9 (this is very old format, don't choose if unsure)
        (X)   exit"

Damn I don´t know the version, I assume it depends on the reiserfs tools
of my stable Debian version.
Does someone know what version is the right with stable Debian?

/FAU