Well, you could always ask a dealership if they can run the VIN and see what options the car had. It doesn't always work, but it's something. BMW VIN's don't tell anything about options but it's conceivable that somewhere there is a database that will link each VIN to the option list for the car. Definitely not 100% sure though.
Also, you could check with a dealer and see if BMW does what Porsche does and affixes an option code sticker somewhere on the car. If the car has an option code sticker, you can check from that.
ZV
EDIT: Never mind, clicking the very first link that comes up in a Google search for "2001 BMW 3-Series" (without the quotation marks) takes me to a review's intor page. The review lists traction control as standard on all 2001 3-Series.