It's kill or be killed.
You really don't need a lot of stuff to fight the flea wars and you don't need to spend a lot of money either. When you have all of this stuff, go to the flea extermination page.
A good vacuum - Please do not underestimate the power of a good quality vacuum cleaner.
Frontline Plus or Advantage - These are spot treatments for your dog or cat. Please, use the versions sold at veterinarians, don't waste your time or money on the cheap crap at Wal-Mart.
Flea Shampoo - The cheap stuff is fine.
20 Mule Team Borax - God's gift to flea warriors.
Beneficial Nematodes - Little worms that kill fleas.