If you're arriving on Air France or American, you'll arrive at one of the Terminal 2 halls, where 90% of the time you can be in a taxi 45 mins after the door is opened. On UA, you arrive at Terminal 1 and you can usually count on a somewhat longer process, so 90% of the time you'd be out in 55-60 mins.

Traffic in Paris is still nasty if you leave CDG at 9am, and the 7th Arr. in the SW of Paris is an especially awkward location to reach from CDG, which is NE. You can plan to spend plenty of time on the Peripherique. OTOH, if you leave CDG at 10, you're likely to have a smoother trip into town.

p.s.: I would certainly advise against taking the RER. The RER has no baggage facilities (and you said that you'll have checked baggage), the trains are crowded at that hour of the day, you'll have to make at least 1 connection, you'll have stairs to climb, and then you'll still have a walk to your hotel.



[This message has been edited by wideman (edited 01-29-2001).]