Simon, I can send you a PM on my site, which would contain the XML's for vB3 and vB4.
The new way has so far seemed to successfully blocked them, as well they do not show up in Paul's mod anymore.
I also have added the ability to change the name of the log file, to a different name, in case admins want to change it, as well as a counter of how many bots are blocked using the mod, that shows up in the site stats on the forum home. Now this is of course starting from the time you install the updated version, as there is no way to get a correct count from before. There is also a setting to select which usergroups can see the stats.