Yup! You're not just eating them plain, are you? :doh:;)
As others have said, they need to be served (cooked) with some kind of sauce, and in that respect you could buy a packet, as has been mentioned. However, if you *really* want to make them tasty, then you have to 'cook the flavour in'...
So, do you have a wok or a decent frying pan?
If so, in a very hot pan or wok, toss the rice noodles in some sesame oil, fresh garlic and chilli, light (not dark) soy sauce, and fresh ginger. The heat will infuse the flavours into the noodles and they'll taste amazing, and better than any bought packet of sauce!
*But* watch you don't overcook them. If the pan or wok is hot enough, then you're only talking a matter of minutes to stir-fry through and serve. Enjoy :cool:
Marco.