There was a thread about this recently in which I posted my successful results in overcoming CTS. Here is a link to that thread:
http://www.quiltingboard.com/posts/list/20317.page
CTS is an inflammation, so anything you can do to eliminate that inflammation before scarring takes place is helpful. I cut way down on my typing, wore braces day and night (including when typing), and took a high dose of citrus bioflavanoids twice a day.
Repetitive motion is what causes CTS, so it's important to eliminate as much as possible the repetitive motion that brought on the inflammation. Braces keep the wrist in a neutral position, reducing pressure on the nerve and giving the carpal tunnel a chance to heal.