One Red Army General remarked that "we have won enough ground to bury our dead". Casualty estimates vary widely... According to Nikita Khrushchev, 1.5 million men were sent to Finland and one million of them were killed... The most reliable current estimate puts the figure at 126,875. Finland's losses were limited to 26,662 men.
http://en.wikipedia.org/wiki/Winter_War
The Russians won that war (they got 9% of Finland), however Finland came a very strong second!
The really odd thing is that the winter war made the red army pull itself together and reorganize. The world could a be a very different place if the Red army had not had the 'very bloody' lessen of the winter war.
Looks like a good film. Your VHS copy should have an accident with a DVD burner.