Check out the following thread:
http://bebot.link/index.php/topic,627.0.html

You would at least need the Persistant Whois cache, Roster_Guild (modified), Online (modified). Go slowly and read the comments in the linked threads and follow all instructions. If that all works out nicely, you can start adding more modules. Makes for a really nice bot in the end. You just need a little patience and a good editor. And make backups of all the modules you modify, so you can revert changes. Moules that start with "_" aren't loaded, so you can easily keep backups. For example before installing a new Online.php, copy the old one to _Online.php.orig or something like that. It won't interfere with the new module. And if things go wrong, you can easily copy it back.
For the new items, there are two options. You can either use the local database in this thread. Or you can use the central items database in this thread. Local database is faster and gives you full control about your items, central database is easier to install, and someone else is taking care of updating it.