I'd have to say the Windows Movie Maker is one of the best bits of "free stuff" microsoft have given away. I'm no expert, but find it fairly intuitive. There is probably much better / fancier stuff out there - but it does what most people (including you on this occasion) need. They are bound to bugger it up in future versions!
Thanks guys - Movie maker took 30 secs to down load and as you say Polwart is intuitive to use ( and free ! ) and seems able to cope with any format - I have put 1st attempts at use with the other pics in the racing section .
If you just want a still from a video can't you just use the printscreen button on your keyboard?
Most of the time you can't, no... because of the way video is rendered and sent to the graphic card... every tried moving a wmp window around quickly while its playing? normally it goes black