I first decided I wanted a cat several months ago, but I was concerned b/c I've gotten watery eyes and a runny nose many times when visiting people who own cats. I talked extensively with Franny Syufy, and she started a thread about my allergy problem on the About.com Cats Forum.
Franny also showed me her article on 10 steps to decrease cat allergies. Among these simple steps a few stood out to me:
#2. Don't let cats into the bedroom so there is no cat allergen where you sleep -- makes sense
#4. Use HEPA air filters in rooms where your cats frequent -- sounds like a reasonable solution to the problem of airborne dander
#5. Vacuum up cat allergen with a high grade HEPA vacuum cleaner twice weekly -- I already have a HEPA vacuum so no problems there.
#8. Clean Your Cat -- I'd heard that there were dander-removing shampoos and solutions before, but this just reminds me of their importance.