basically you need to have linux.img (it can be debian, ubuntu,bt5 & etc) google it.

copy the img to your home folder (/home/user/MyDocs/)
then download HarmChom.tgz from 1st page - Thanks to qole
extract it to your home folder, then you shoud see HarmChom folder.
Copy src/bin/* to /bin/, chmod +x after copied to /bin.
You might want to edit .chroot file as well (refer to page 1).

For close kernel need to edit below line.
Edit the /bin/debian, goto line 72 change it to "sh /bin/qchroot"
edit /bin/qchroot, goto line 37 add "sh" as well.

once done above follow the simple 4 steps previously.

You should able to mount linux.img