Best way is to leave their name alone. You can't assume how their name is formatted. My last name is a capital first letter then a capital 3rd letter. I can't explain how frustrating it is when systems mess it up. At any rate you could use CB Auto Actions and enable format functions under Parameters to allow them to work on the action. You can then reformat the name as needed. Example usage as follows.
Code:
[cb:parse function="convert" method="uppercasewords"][cb:parse function="convert" method="lowercase"][name][/cb:parse[/cb:parse
The first format function lowercases the entire name. The second uppercases the first letter of each word. Another option is to use CSS and try the following, but it'll only work for the first letter of the name. To work around that you could change the name fields layout to put together first, middle, and lastname substitutions with spans surrounding them then style those spans.
Code:
.mySelector {
display: inline-block;
text-transform: lowercase;
}
.mySelector:first-letter {
text-transform: capitalize;
}