My question was if so, then which Dell monitor. I ask because just bought a Dell UltraSharp U2410, and could not get it to display properly. Also could not use it wit the mac book lid closed.
All I'd like to know is the model of a 19-20" Dell if anyone is successfully using one as an external for the the macbook pro 15". Also any problems anyone is having using the external display with the macbook closed.
I'm considering the Dell Ultrasharp™ 2209WA 22-Inch
I can't speak for Dell monitors, but as far as using any monitor with the lid of your MBP closed, it should work regardless. You need to have an external keyboard and mouse attached. Take a look at the following Apple KB article titled "Clam shell mode". Link
No external monitor is going to work properly unless you can get it to display in its native resolution. That includes your Dell. Also, you must use AC main power when you have an external monitor attached.
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