Flash advertising is allowed for all Google AdWords advertisers, with some technical restrictions.
Ad format: All Flash ads must be submitted in the full standard format sizes:
File size: Flash ads must be 50K or smaller in file size.
Animation length: Animated ads are restricted to a maximum of 30 seconds (at a 15-20 fps frame rate), after which point they must remain static. These ads must also comply with the other animation policies.
To make swf for Google Adwords with ThunderSoft Slideshow Factory, settings below will be useful for you.