Thanks anyway!

But it report the following error message when issue the instruction.

witkey:~# insmod cloop file=/cdrom/KNOPPIX/KNOPPIX
Using /lib/modules/2.4.19/misc/cloop.o
/lib/modules/2.4.19/misc/cloop.o: unresolved symbol kunmap_high
/lib/modules/2.4.19/misc/cloop.o: unresolved symbol highmem_start_page
/lib/modules/2.4.19/misc/cloop.o: unresolved symbol kmap_high

Need some help from you,my friends.