Finding an array of averages ?? Newbie here

I am writing a program that a decision needs to be made, and I need help with.

I have a range of numbers ( actually ASCII values ) from:

97 to 122 ( representing a-z )

The user will be entering six (6) letters as an answer.

Somehow, I need SIX branches of decisions to be made based upon the sum of their answer.

Here is my pseudocode ( remember I need 6 branches ) - and my pseudocode will be using low, wrong numbers just for example:

if answer>100 and answer < 200)
   DO THIS, BRANCH #1

if answer >200 and answer<300
   DO THIS, BRANCH #2

etc.

I dont know how to take the six characters entered ( adding up their AsCII values ) and determine how to break it up into six branches! I would like the branches to be equal in their span, but they don't have to be.

Can someone help me in determining the six branchevalues???

Thank you.