Correct, type in that command and then hit enter. Next post what you see on the screen. Normally there should not be very much, but you will have to select correctly using the arrow keys and the spacebar to select/deselect.

And don't be scared, if this doesn't work, we'll continue tomorrow.

ok i did, here is the result :
debconf: dbdriver "passwords" warning: could not open /var/cache/debconf/passwprds.dat : permission refused
debconf: dbddriver "config" could not write /var/cache/debconf/config.dat-new : permission refused

Try this:

the screen went all blue again.
in the upper screen, it's written packages configuration tool

then there's a green window untitled grub-pc configuration. it says (in english) :
the grub-pc package is being upgraded. this menu allows you to select which devices you'd lkike grub-install to be automicatlly run for, if any.
it is recommanded that you do this in most situtations, to prevent the installed grub from getting out of sync with other components such as grub.cfg or with newer linux images it will have to load.
if you're unsure which drive is designated as boot drive by your bios, it is often a good idea to install grub to all of them.
note : it is possible to install grub to partition boot records as well.
however, this forces grub to use the blocklist mechanism, which makes it less reliable, and therefore is not recommended.
<ok>

what shall i do?

(i don't know what this is all about, but i think this is a good time for me to remind you that i have windows installed on this computer as well)

Does it show a list of devices, meaning harddisks like (hd0) /dev/sda or so? Post all devices listed. The fact that you have Windoze installed as well is not much of a problem, although it might be that after upgrading grub, you'll have to do some manual editing to be able to boot into Windoze again. But that's the next problem, for now post whatever devices are listed.

Kind regards,

Eric

there's not even a green pixel that i didn't mention, let alone a list of devices.

OK, hit enter

and now the screen saver mode started. what key should i press so that it has no consequence on the current window?

any arrow key should do it

ok, i pressed enter.
the screen is still all blue.
in the upper screen, it's written packages configuration tool

then there's a grey* window untitled grub-pc configuration (title in red). it says (in english) :
GRUB install devices: (in black)
[ ] /dev/sda (in red)
[ ] /dev/sdb (in blue)

<ok>

what shall i do?

Tricky, it's one of those two . Select
by using the arrow keys or tab to navigate and press spacebar to select.

Then hit enter and pray.

ok i did, and i pressed enter.
now i'm back to the prompt window (although there's still *one* line that is blue, in the upper screen.
it has written a lot of stuff, do you want me to copy it?
what to do next

No, no need to copy that. Next command to run:
and enter.

Then when that's finished
and post that output here. It should show version 2.

Kind regards,

Eric

the last lines were :
installation finished. no error reported
this is the contents of the device map /boot/grub/device.map
check if this is correct or not
if any of the lines is incorecct, fix it and rerun the script grub install
(hd0) dev/sda
(hd1) dev/sdb
generating grub.cfg
found linux image : boot/vmlinuz-2.6.31-14-generic
found initrd image : boot/initrd.img-2.6.31-14-generic
found linux image : boot/vmlinuz-2.6.28-13-generic
found initrd image : boot/initrd.img-2.6.28-13-generic
found memtest86+ image : boot/memtest86+.bin
found windows (loader) on dev/sda1
done

grub legacy has been removed, but its config files have been preserved, since this script cannot determine if they contain valuable information. if you would like to remove the confiuration files as well, use the following command :
rm -f /boot/grub/menu.lst*


and then follows a line where i can put a new command

i'll wait until you've told me to do what you asked in your previous post, so that you have time to read what i wrote on my previous post