CMS Made Simple Forums

hello,
i need to insert my e-commerce in this cms. where to start? should it be a modue or an add-on? whats the difference anyway? i haven't found any docs about it or some tutorials or easy starting steps. can someone please help me? thanks.

Sal.

now you can use about 3 modules(look into developers section), but, no one running with all what you will by needed. Or you can make webpage with CMSMS and in directory shop, or subdomain install another aplication. For example Creloaded, Zencart, or basic Oscommerce. But with making right design, You will have problems