I only know two "famous" lense types. it is "Schneider Kreuznach" and "Carl Zeiss", but of course there are others which are also good. You are on the bright side when you take a camera of a company which deals with photography in general (such as Kodak, Canon, Nikon, Minolta and so on...personally I would never buy a HP-digicam but maybe that's just my quirk. (though I own a Kyocera

, but these cameras have got a good reputation for making decent pics )
I would also prefer lenses made of glass and not grinded plastic or something like that. 3 - 4 mega pixels should be (but that depends on how much you want to extend/edit your pictures).
if you are interested in heavy-zoom cameras then don't make the mistake and take one with good digital zoom. the optical one is important! imo digital zoom is plaything. if you enlarge pictures shot with digital zoom you won't have fun.
ensure that you can read the display well at daylight. the biggest screen hasn't to be the best one. my dad has got the Kodak DX 6940 and its screen is quite weak outdoor. but on the other hand it is bigger than the Kyocera one.
if you just want to take landscape and portraits I guess you can have a good camera within 200 €.