I've found a really simple method to have very vivid dreams.
If you want to be able to have very vivid dreams, go here and scroll down untill you see something called "The Gravity Position". It's helped me to get better/improved sleep and really vivid dreams.
http://www.energybreath.com/Pages/brain2.html
go there. . .and if that position works for you (might take a few days, but it happened instantly for me), you should seriously think about getting a book or two from Win Wenger. The one that I'm reading right now is The Einstein Factor, and I plan on getting Beyond Ok.
Master_Debator