Amaryllis bulbs need a cool, dry period from early fall until about December to "rest" for the upcoming blooming season. For this dormant period, I put mine in my basement and stop watering until I see new growth, usually a few months later.

After blooming in the winter/spring the bulb can be put outside in the garden or left in the pot in a mostly sunny area. A little fertilizer over the summer is a good idea, so you get lush green growth. Then in late summer to early fall, start the dormant period by bringing indoors to a cool spot, and withholding water until the green growth dries up, at which time it can be cut off just above the bulb. When new growth starts, bring up from the basement, put in a warm, sunny window and start to water again, just enought to keep the soil fairly moist, not soaking wet or it will rot. You should then get new flower buds forming.

Thanks! I'll go put it down in the basement until spring...hopefully it will come back to life in a few months!

I hate to be disagreeable, but most "amaryllis" or hippeastrum need no dormancy period. They can be evergreen in mild climates and flower sporadically. A lot of people force them into dormancy, myself included, to induce flowering. But by no means do they require it. Hippeastrum Papilio is a great example of an evergreen species and should not be induced into a dormancy as that would actually harm the bulb. The methods described by ontnative should would at getting forced blooms though. Good Luck.