Blu Ray Drive on Computer?

I have a AMD X2 6400 Black edition CPU with a ATI 1950X Videocard with 4 gigs of ram. My question is will i be able to watch blu ray movies on my computer?
I forogot to mention my monitor is a HannsG HG281D it says FullHD 1080P but my worry is my computer can it handle the Blu Ray Movies?

Also should i get a blu ray ROM or a Blu ray Writer?
Whats the best bet?

Thanks in Advance
 
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