This isn't meant to sound insulting - have you gotten the remote to work with any other equipment by programming in codes? I ask because the issue could be the codes, or it could be how you're trying to program the remote.
Assuming that you're doing it correctly - if the codes that were in the remote's owners manual don't work, then the first thing that I'd do is go online (probably to Philips support webpage) and see if there are any updated codes.
We might be able to help you out better if you let us know the model name/number of the remote.
Thanks.