Are there any treatments for a hangover that actually help?

I think this is my first real hangover. I have said that in the past when I’ve woken up with a bit of a headache, but this is pretty horrendous. I don’t have any tomato juice or Gatorade, but I have been drinking lots of water all morning. I am too sick to stay asleep for more than a couple of hours at a time, but I plan to go back to bed (several times) today.
Are there any important tips that I should be utilizing to feel better?