My gas furnace is blinking red and continious, and on the back of the door its says that this means "internal control failture" so I need to know what that means. Is it one problem or a number of things I need to check? Help!

It means the control board is bad. The board that the blinking light is on. You Can turn the power of going to the system for a few seconds and then back on to try and reset it, if you get the same code you will need to replace the control board.