Is there any chance that I could install Mac on an Aspire 532H?
Looking at the specs it should work fine, the Intel GMA X3100 was used in the old macbooks so you're covered for graphics, sound should work with voodooHDA. Just try it out with any of the methods available here for the A150 and D250.
Okay, I'm officially an idiot :-/ "Pinetrail" netbooks use an intel 3150 graphics chip which is NOT supported under OS X (and yes x3100 drivers have been tested). So yes you can install it, but the screen wont be full resolution and you'll have no graphics acceleration (the CPU will have to render every frame as there are no GPU drivers) which will make the machine pretty much unsealable.