If that was the proper fix, the car would have come from the manufacturer like that. You have to determine what is missing when it doesn't start. That is going to be spark, fuel, compression, or valve timing. Compression and valve timing aren't going to change with temperature. That leaves spark and fuel. Spark is not varied according to temperature but fuel metering is. That's why I suggested the starting fluid to verify that.
A block heater might trick the Engine Computer into thinking it's warmer than it really is but that isn't solving the problem. It will be programmed to give less of a priming squirt when you turn on the ignition switch when it's cold so it might start even harder. On the other hand, if the intake manifold has time to get warm, what little fuel comes in will vaporize better so it might start easier, but that won't help after the car has been sitting outside at work all day.
Be aware too that in that time period a lot of cars had "cold start" injectors that were separate from the regular injectors. I never worked on any of those but if there's a problem with that system, it results in hard starting but it runs fine once started.
Tuesday, October 30th, 2012 AT 9:25 PM