Populating fields

[WEC]

Again, I have yet antoher questions I need help with!

1) Say I have a matrix with radio buttons set up Sort of like this:
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How interested are you in the following :

.................Very......Moderate ......Slightly......Not at All
Travel .................................................. ..........X
Business.....................X
Money..........X
Work ...........X
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Now I have a follow up question (format: checkbox) and I want to populate the items that appear based on which items the user selected "Very" for. How do I go about doing so? I could not find a way to set conditions for individual radio button fields, only for a Whole question.
My Idea is to have a follow up questions such as "Of those selected, which is the most valuable to you? (and here would be the radio buttons for all fields the user selected "very" for in the previous question).





Thanks again!!!