Converting my TV

Question

I purchased a Philips 25" TV, model #24PT6341/37 about 18 months ago. I am connected to our local cable service with digital signal. With the new digital signal requirements coming into effect in Feb 09, will I have to purchase a converter box in order to continue viewing programs offered by our local cable provider or will I have to buy a new HDTV? My email is: [e-mail]. Thank you.