having been to Paris twice now.

1. Buy a guide book--they have several at Jarir or Virgin.

2. Agree with above poster:

A. Sacre Coeur better than Notre Dame. I also
like Saint Chapelle better, which is only
about a block from Notre Dame.
B. Metro is fabulous
C. Lourve is huge, just run to your favorites
and skip the rest.
D. I enjoyed Versailles, especially the grounds.
E. Eiffel Tower lines can be long or short
depending on day and time. If super long,
then leave and come back later.
F. Walk around in the Jardin des Tuileries.