It probably already works, at least partially. If you don't want a Philips remote control (perhaps because it's too expensive?), I would advise against the relatively expensive Sony remote control. There are many "no name" universal remote controls that are much cheaper and also fulfil their purpose.
Unfortunately, this would not fit. The remote control is compatible with the following TVs:
KD-A8, KD-XH9005, KD-XH9096,KD-XH9196, KD-XH9296, KD-XH9505, KD-XH8505, KD-XH8096, KD-XG9505, KD-XG8505, KD-XG8596, KD-XG8796