1998 Ford Ranger smoke and smell of anti freeze when heat i

When i turn the heat on in my truck the smell of anti freeze is extremely strong and smoke generally pours out of the cracks of the hood. ive opened the hood to see before and it seems one of the hoses leaks anti freeze onto somthing hot and boils it right up. i dont know how to fix the problem but it would be great if you guys could help. Thanks a lot
-Troy