Install lion or snow leopard

I am very new to all of this. Tried attempting this before but failed so i gave up. i am now determined to make this work!

I have an Acer Aspire 5536G with the following specs:

AMD Turion X2 RM-74
Acer JV50PU Motherboard
4GB RAM
ATI Radeon HD 4570 Graphics Card

I currently have a windows 7 Ultimate and windows XP Professional DualBoot setup. However i would like to add a Mac OS X installation as well.

Is this possible with my specs? I have done some research already but i am scared i will mess up my laptop if i do not cross check with an expert.

I was planning on installing Snow Leo with this guide
suhas tech.com/how-to-amd-hackint ... or-10-6-7/

and then updating to Lion via this guide
http://tonymacx86.blogspot.com/2011/10/ ↗ ... using.html

Is it possible for me to do this? If not could you point me towards a relevant guide that is compatible with my specs. I dont mind just installing snow leopard.