I hope this is posted in the right place.

I have a site with an old shopping cart still being served for backwards compatibility. I still get customers through it because out there are old offline cart pages directing them to our site. Since these are orders, I am reluctant to remove the old cart pages.

Trouble is, the company I bought the cart from is no more and the scripts are out of date. I suspect they are no longer fully secure.

My question is, how can I redirect a visitor who lands on any of these old pages if they don't exist? i.e. if I remove them?

Is there a way in cpanel to catch these people and send them to the new shopping cart - or any to any page I choose?