well i dunno
im pretty sure u can!
u have to make a partition of the hard disk n set a piece as free space than u download a cd image of mac os x (.iso file) n write it on a cdcd! then set the starting disk to the cd device n restart pc with cd inside! installation process should start n should get on the free space on the hc
any question? if i were in u dnt download new os x version (10.7 lion) zwhich is in fact great but stay on 10.6 snow leopard coz lion has a lot of strange stuff n maybe will give u more errors!
in fact is strange wish urs sbsp...generally people install linux not mac on windows pc
anyway good luck!