Fellow Photographers, I need your

Well, folks I've run into a brick wall, which in case you are wondering, yes it does hurt, but anyways, my problem is with sunsets. I have a Nikon D3100, today I was trying to photograph a BEAUTIFUL sunset, but I couldn't catch the color, instead I got a white back round and a lot of detail in the fore and mid ground. There was a bright pink in the clouds as the sun was setting, now to a degree the color is still there, but I had too much white in the back round so it kinda drowned out the color. ANYWAYS, its Nikon D3100, if you have any suggestions please fill me in.

If it is a bright sunset that appears to be emitting a lot of light, try fiddling with your settings (I'm a Canon user, so they might differ) but try: ISO = 100-200 F-Stop = 2.8 Aperture = between 50-90
If it is a darker sunset, and you need to let more of the light in to capture those colours, try bumping up your ISO to something like 400/600.
Remember you can set all of this when you are in Manual (M on the wheel) mode (I'm not sure how much you know about cameras, just wanted to remind you!)
Happy snapping.