Is it possible to change cs-cart into a forum? Such as this one?
No, this is vbulletin.
You could get a skilled programmer to create a bridge between cs-cart and a forum of your choice. As long as security isn’t compromised, I believe it’s very desirable, in some cases…
But I would rather go for an advanced rating/discussion modification, as it adds to the store’s value.
If you’re selling goods that have a great life span (like Amazon.com, Newegg.com, etc.), then it’s a great idea to have some advanced discussion module.