how to reinstall?

[michael <cs@networkingnewsletter.org.uk>]

I have a system I've hosed and I wish to reinstall the 'etch' o/s.  
The current set up is

Filesystem            Size  Used Avail Use% Mounted on
/dev/hda2             274M  126M  134M  49% /
tmpfs                1007M     0 1007M   0% /lib/init/rw
udev                   10M   84K   10M   1% /dev
tmpfs                1007M     0 1007M   0% /dev/shm
/dev/hda5             1.9G   48M  1.7G   3% /boot
/dev/hda10            2.8G  1.8G  1.1G  62% /data
/dev/hda11             11G  1.1G  9.0G  11% /home
/dev/hda9             449M   25K  425M   1% /tmp
/dev/hda7             4.6G  1.8G  2.7G  40% /usr
/dev/hda6             5.5G  927M  4.4G  18% /var
/dev/hdc              551M  551M     0 100% /media/cdrom0

so does this sound sensible:

1) backup /home and /data to another machine
2) boot from netinst CD
3) remove partitions hda2 hda5 hda7 hda6
4) recreate said partitions
5) complete install
6) run apt-get update/install

and then reinstall other progs (evo) and drivers (nVidia) as required?

Thanks, Michael