VGA vs DVI D

[Tha General]

I have a acer 21 inch monitor and just notice I can use DVI-D, but wanted to know the difference and is it worth upgrading over VGA?

Also can someone help me find them, best buy and newegg is only places I want to shop.
Couldn't find them at best buy at the site for some reason.
Thanks

 

[cliffordcooley]

Do you have DVI output on the PC? Your monitor may support DVI, but that doesn't mean your PC does.

Here are the DVI Cables at Newegg.

 

[St1ckM4n]

DVI is digital, VGA is analogue. Like the difference in TV signal.

DVI should be used if it's available, the image is cleaner, clearer, crisper, text is better.