Oh Ben, Ben Ben.
Where to start?
An engine started from cold is just that - cold. The exhaust gasses always contain a fair amount of water vapour, and so, especially when ambient temps are low, and the engine is cold, you will see white "smoke" coming from the exhausts. So long as this condensation goes away once the engine (and the exhaust pipes) are warm, no problem. If it persists, even with a toasty hot engine, you may have cylinder head gasket problems. (doubtful, so don't panic).
Condensation tends to "disappear" or fade away as it blows away from the exhaust pipe, smoke doesn't.
SVA emissions tests are done with a hot engine, at it's normal operating temperature (they normally wait till the cooling fan cuts in to tell them the engine is up to temp, so make sure that is adjusted right).