My car is blowing white smoke!!!

So forgive my non mechanically incline mind, but I am not sure what to do with my car. I bought an 04 rx8 about six months ago with rougly 65,000 miles on it. It ran great and I didn't have any serious issues until recently. It started having difficulty firing up and it was difficult to keep running at low rpms. The CEL starting flashing, so I ordered new plugs, wires, and coils. I limped my car to Walmart to buy some locktite for the spark plugs, and I noticed a large amount of white smoke billowing out from the engine, and from underneath the car. I immediately turned off the car and pushed it into a parking space. Now the car won't even start. A mechanic buddy of mine told me it smelled like it was burning collant. I guess my biggest concern is that the engine is toast. I am no mechanic, but unfortunately I am a very long ways from a rotary mechanic. Any help would be greatly appreciated!