Tips on Buying Cars: Trade-in, 2002 audi allroad, infiniti g35

Question
Hi
I have a 2002 Audi Allroad Quatro that I had purchased. I have 42000 on it and I would like to sell it and I'm looking at leasing an Infiniti G35 or an Acura TL. I usually buy my cars, but in this case it makes more sense for me to lease. How would the trade in of my Audi effect the lease or can I negotiate the lease and expect them to buy my car. I certainly know what the values are, but am I crazy thinking that they would offer me a fair price or am I being naive S Should I try and sell it on my own and just lease the new car.

Thank you

Answer
I sent an answere to this question and it doesn't look loke it posted. So I will answer again. Please don't deduct on my rating for time this is the second time I answered it. The system sometimes misses emails! Selling thiis car by fae will be your best bet you can expect to recieve 2000 to 2500 more moeny if you retail it verses trading it in. Kbb.com is a good palce to start for the values of the car. Any other questions please dont hesitate to ask! And please rate me if you have a second.