Hello, I'd like to have a larger monitor for use with my laptop and wonder if I can just plug it in the external port and hook it up somehow to the existing monitor? Will the laptop need a certain amount of processor and memory or just enough resolution for the new monitors size? It's an old hp nx9600; pentium 4, 3.2ghz, 2 gb ram, and 64mb video with max resolution at 1680x1050. Would be using it for general web browsing, text reading, and movie watching, no gaming. Thank you.