will HD-DVD 1080 play on macbook with external DVI enabled LCD Screen?

will it still play the HD-DVD 1080 format files? i know on a normal macbook it needs to downscale and this requires more memory. (http://www.google.com/url?sa=t&ct=res&cd=3&url=http://answers.yahoo.com/question/index?qid=20071004152937AA7Pz62&ei=Pq-eSL2GHoS-1wbsptCEBQ&usg=AFQjCNEk2B2hu-7g3fAYswGgoiTT1Z2gNw&sig2=b2ltmHgRAlwSeMoDg0J7Vw)
What If i connect an external LCD monitor capable of 1680x1050 at 60Hz via DVI to the 2.4Ghz, 2GB macbook