All SNMP-specific information that is scanned by Lansweeper is stored in tables starting with tblSNMP in the Lansweeper database. Most if not all of the information you're describing currently isn't scanned though and won't be found in this table. Being able to customize SNMP scanning by importing MIBs as been requested before and is already on our customer wish list. We've added you to the customers interested in this feature.
As this concerns a feature request I've taken the liberty of moving this topic to the wishlist section of our forum.