Protecting cells in a range, if cells contain information

Hi,

I have been a lurker of the forums for quite some time and have enjoyed all of the data and help. I went searching for this answer prior to coming and posting, if there is an answer I apologize!

I need help with an excel file I am using at work. I have users filling in data in columns C and D, I need a macro which will select everything entered and lock those cells - well the catch is, if both columns have data. If column C or D are empty I need that row to remain unlocked. No sorting can occur as well....

Any ideas on how to get this done?


Lets see if I can give a visual...

Table   | Column C      | Column D
Row 8   |   Joe         |     3        |           <-- protect both cells
Row 9   |   Jessica     |              |                    <-- leave unprotected
Row 10  |  Luke         |    2         |                   <-- protect both cells

Data can be entered up to row 82, and the entire range has been named.

I also have a formula in Column B which calculates, if either Column C and Column D are blank to equal "1", otherwise "0". This is used by a different part of my macro. I was trying to think of a way to use that when selecting the cells, but don't know how to code that either.

I appreciate any help you guys can give!