need someone to install ssl for me on ecom site asap...

I need a simple task done... I have a zencart ecom site that I want to move to a new hosting company. (Reseller account) The site has been moved already but the ssl cert has not been moved. My new hosting company does not know how to do this. So I need someone who can do this for me. Need advise though whether it's easier to move the old ssl cert or just get another one from somewhere like [login to view URL] . My new hosting site has given me whm access to ssl/tsl menu... You will also need to show me how to do this in a few screenshots after it's done and working.