kwross, some people here can be quite mean and sarcastic. Many in the roadie community think if you don't spend over $1000 on a road bike, you are nobody. Of course that's not true.
What is true is Huffy makes the worst bikes ever. Period. Even if it's free, do not take it unless you are truly desperate and you do NOT already have a bike.
If you want a road bike as an improvement over your MTB, bike, do not buy any bike with 26" tires. And for God's sake do not get a woman's bike if you are NOT a woman. May as well keep your MTB and just put slick tires or street oriented tires on it like Continental Town & Country tires. It will make a hell of a difference in handling and speed on your MTB.
Road bikes is all about speed. Find one with 700c wheels/tires and as light as possible. Keep looking in the classifieds for one that is 10+ years old, and in your size. Then do an internet search on that model to get an idea of how good it WAS when it was new. Whatever road bike you get, if it is a high performance road bike (even 10+ yrs. old) it is going to be faster and more efficient than your MTB. Good luck.