[Marilize]

Good luck. Let us know how it goes at the vet. Here are my suggestions for a whelping toolkit:
Stethoschope - normal puppy heart rate is 220 bpm & normal adult heart rate is around 120 to 140 for small dogs. You can also listen to her tummy to hear the puppies before they are born.
Digital scale, notebook and printouts for noting down the whelping process, keeping track of puppy weights, etc.
Lots of blankets and towels
Crate or whelping box (I use a travel crate that the dam is used to. Added bonus: it's super quick to get her ready if you need to take her to the vet.)
Experienced breeder/vet on standby.
Goat's milk, gelatin, eggs, fast acting calcium supplement for supplementing dam & puppies if necessary.

You can also get a bulb syringe if you don't know how to clear a puppy's airway. Iodine, hemostats and unscented dental floss for tying the umbilical cords.

Read as much as you can and try to buy as much as possible beforehand. You won't want to leave the house once you need it.