Jim, if you take a gallon of water and add a cup of non-iodized salt to it you will have the base for a brine. You can add any spices that you wish to yield the flavor you like.
If you like a touch of garlic in your beef I made a mojo base last night that I think is going to be a great addition to this mix but I haven't tried it yet but its very easy to make and I think the flavor is going to be outstanding. Here is the recipe for that. If you decide to put your fate in my hands I'd appreciate any feedback.
8 cloves of garlic, minced
3 tbs of lemon juice
1/4 cup of lime juice
1 cup of orange juice
4 Bay leaves
2 tsp oregano
1 tsp red pepper flakes
1 TBS soy sauce
2 tsp Dark Brown sugar
Put these ingredients in a blender blend well. When you first taste it its going to seem strong but give it a minute and remember its going into a gallon of water.
Add this to your basic brine mix and soak the brisket for 12-24 hours.