This is what I do for a urinary tract infection:
Take Azo Cranberry
Drink lots of water
Put a teaspoon of baking soda in 8 oz water and drink it all down.
If you don't feel better within 6 hours, take another teaspoon or 1/2 teaspoon.
Update 2009 -
The above is good, but what will really help a urinary infection is the following:
D' Mannose - get it at Vitamin Shoppe or your local health food store - at least 6 pills a day
Probiotic - at least 3 pills a day
3 days of taking the above and the infection will be gone!
I've read that the Dmannose and a probiotic is especially great for pregnancy-related uti!
Here are some interesting sites on UTI: