Welcome and Congratulations on your Sport Trac but I can't help you, sorry. I don't have a factory tonneau. I have just ordered the Undercover tonneau but it has yet to arrive. By the way you have a relatively rare and much sought after color on your '01.
There are two locks under the 2 of the 3 rubber bumpers on top of the cover. Lift the top half of the rubber bumper up. There is a lock inside (under the bumper) Use your key to unlock while lifting the back half of the tonneau. The one for the front half is located up by the rear window on the drivers side. The one on the passenger side is just along for the ride.
Also there is an emergency release on the front cover inside the bed. Its a blue handle with a cord attached to it. Just in case you or one of the kids get locked in.
LaurenF, welcome, and good luck here at this site! Good people, good topics, good banter, back and forth! Me, I cannot recall that particular color, it is from the 2001 year, but it was discontinued that same year it appeared on the dealer lots. BTW, I have the other color that did not last past the first year; ISLAND:wub: BLUE! It is a beautiful color that is very rarely seen, just as that orange you have, both are 2001 colors. Island Bue is akin to turquoise or teal green, just in case you spot one somewhere