Last night my wife put a load of clothes in the dryer and started it. When the buzzer went off she went to take the load out and they were still wet.

She said it didn't seem like it went through the whole cycle, even if that were the case the clothes should have been somewhat dry.
I'm thinking that the heating element went out on the darn thing. Anyone have experience with this same sort of problem? Am I looking at a bigger problem than the heating element? And...is it very hard to change the element? If not, where is a good place to go for the part? It is an older Frigidaire.
Any suggestions are greatly appreciated.