I want to set up a linux PC for my daughter to watch youtube and since I'm a novice at Knoppix I am trying to get it working.

I have a similar problem with grub prompt but this info answers some of the previous (basic) questions other users have stated in this thread. I still have problems though. Maybe someone can help me if they get past the problems they were having. Here is what I did:
1 - booted Knoppix 5.1.1 from CD and performed knoppix-installer
2 - re-booted from HD (hard disk) and only got the grub> prompt and no menu options
3 - re-booted from CD and right clicked the desktop icon for hda1 and mounted it (user lotech and others had problem here)
4 - I right clicked hda1 again a second time and changed the read-write mode to writeable (user lotech and others had problem here)
5 - I clicked Konsole and entered su (so I could be root user, no password required when booting from CD) (user lotech and others had problem here)
6 - cd /media/hda1/boot/grub
7 - ll (to see the file menu.lst, yes I can see it and the size is 0)
8 - nano menu.lst
9 - copied the contents of menu.lst from an earlier post in this thread into the menu.lst file
10 - changed the line with XX in it so the XX was replaced with the letter r to make the word ramdisk_...
11 - ctrl-x then y then <enter> (to save the file)
12 - ll (to see that now I have 214 bytes in menu.lst)
13 - re-booted from HD and at least now I get a menu item when grub runs

--> but it still doesn't boot.
It fails the root (hd0,5) line of menu.lst, I get the error "Error 22: No such partition"
When I ran knoppix-installer, I choose all the defaults except I choose debian like system.
I'm lost and over my head now. How can I find out what my menu.lst should look like? Are there docs somewhere telling that?
My new menu.lst looks like:

title Debian GNU/Linux, kernel 2.6.11 Default
root (hd0,5)
kernel /boot/vmlinuz root=/dev/hda6 ro ramdisk_size=100000 init=/etc/init apm=power-off nomce quiet vga=791
initrd /boot/initrd.img
savedefault
boot

The contents of the grub directory are:
total 180
-rw-r--r-- 1 root root 15 Jan 27 02:11 device.map
-rw-r--r-- 1 root root 7776 Jan 27 02:11 e2fs_stage1_5
-rw-r--r-- 1 root root 7504 Jan 27 02:11 fat_stage1_5
-rw-r--r-- 1 root root 8320 Jan 27 02:11 jfs_stage1_5
-rw-r--r-- 1 root root 214 Jan 27 03:29 menu.lst
-rw-r--r-- 1 root root 7008 Jan 27 02:11 minix_stage1_5
-rw-r--r-- 1 root root 9216 Jan 27 02:11 reiserfs_stage1_5
-rw-r--r-- 1 root root 512 Jan 27 02:11 stage1
-rw-r--r-- 1 root root 108168 Jan 27 02:11 stage2
-rw-r--r-- 1 root root 9288 Jan 27 02:11 xfs_stage1_5

I booted from CD and ran the command: sudo sfdisk -l /dev/hda

knoppix@Knoppix:~$ sudo sfdisk -l /dev/hda

Disk /dev/hda: 13328 cylinders, 15 heads, 63 sectors/track
Warning: The partition table looks like it was made
for C/H/S=*/255/63 (instead of 13328/15/63).
For this listing I'll assume that geometry.
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

Device Boot Start End #cyls #blocks Id System
/dev/hda1 * 0+ 746 747- 6000246 83 Linux
/dev/hda2 747 783 37 297202+ 5 Extended
/dev/hda3 0 - 0 0 0 Empty
/dev/hda4 0 - 0 0 0 Empty
/dev/hda5 747+ 783 37- 297171 82 Linux swap / Solaris

I hope I have included enough information so someone can answer my Q: How can I get this HD install to boot? (or at least get past grub).
This box is an old gateway E-4200, 700 MHz with 128 MB ram.
I tried booting from the CD with cheatcodes like someone suggested earlier in this thread and it didn't fix the problem.
I don't know if the developers should know about this so I will let someone else tell them, I hate to bother busy people with trifles.

This post should help newbies figure out how to write to the hard drive.
I hope someone can help me to get this HD install to boot because I like the sound on Knoppix 5.1.1, even though I'm still having Adobe FLASH problems.

Thanks all for your time