Just bought a philips wireless

Hi, Often the username and passwords are generic for routers and such until you specify one. I think it is easier to leave it generic unless you think someone may want to getinto your router as it is just another password you have to try and remember.
According to my research Philips ones are just "blank" so you should be able to just press enter. (See this small article about Philips routers and modems.)
http://www.zultrax.com/p2p/help/firewalls/philips.htm

Some ask for both a username and password and others just ask for a password, by default they are blank.

Let me know how you go,
SeaJade