Haven't try it yet.

Boot into knoppix, edit /etc/lilo.conf:
ex:
boot=/dev/hda **change this line where you want lilo to boot from.
in your case:
boot=/dev/hdb*x **x= linux partition

Then remove lilo from mbr, run command from root konsole:
lilo -u /dev/hda

Install lilo to your selected partition after editing lilo.conf:
lilo

Next, is to prepare for your pc to dual boot linux and Win2K:

1) Let pc boot directly to lilo.
Use qtparted, and change active partition to hdb.

2) Use Win2k as bootloader
Open root konsole and run:
dd if=/dev/hdb*x of=/bootsect.lnx bs=512 count=1 **x=your knoppix partition
Copy this bootsect.lnx to a floppy....and use it to transfer that file to your win2k root, C:\

Now, to repair hda mbr.
Use your w2k rescue disk and run : fdisk /mbr
or use W2K cd to boot and choose Recovery console and run: fixmbr
Once you're able to boot W2K, you can choose to dual boot either by using procedure 1) or 2)
If you choose to 2) use win2k as bootloader:
You need to copy file bootsect.lnx to C:\
Then edit boot.ini:
Add the following syntax to the end of the boot.ini file
C:\bootsect.lnx="Linux"
ex:

[boot loader]
timeout=5
default=multi(0)disk(0)rdisk(0)partition(2)\WINDOW S
[operating systems]
multi(0)disk(0)rdisk(0)partition(2)\WINDOWS="Micro soft Windows 2000" /fastdetect
C:\bootsect.lnx="Linux"



Good luck