If a buy a DVD drive from apple in Malaysia can I play DVD from the US

DVD Player: About DVD-Video Regions

Region encoding is the mechanism that enables motion picture studios to control the worldwide release of their movies. It is required by the DVD Forum (http://www.dvdforum.org/forum.shtml) in all commercial hardware DVD players. Every DVD-Video disc contains one byte of data representing a region code, which limits where the disc can be played.

http://support.apple.com/kb/HT2397

Once you have set the region in DVD Player five times it cannot be changed.

Instead, use VLC to view videos from different regions:

http://www.videolan.org/vlc/download-macosx.html

However if you use VLC (a piece of software) you can watch any region encoded DVD.

Surely it doesn't matter where geographically you bought the actual drive from?