I tried installing iDeneb 1.4 on my system and it won't even boot to the disk.
Then I tried JaS(10.4.6, though) and that didn't work either.

What am I doing wrong?

People have gotten it to work and posted their results: HCL 10.5.6/Portables - OSx86
HCL 10.4.6/Portables - OSx86

My specs:
1.4GHz Intel Celeron M
40GB HDD
Intel 915GM/GMS,910GML
1.3GB RAM