Can I specifically state which version of the Perl module to use?

No - the first BerkeleyDB.pm that gets found, gets loaded. If that's not the BerkeleyDB.pm that you want then you'd need to re-arrange the order in which the directories are being searched, so that the one you want to load does get found first.

But that's all beside the point anyway - things are broken and need to be fixed. Version 0.31 of BerkeleyDB.pm is being loaded, but the BerleleyDB.dll that gets loaded is version 0.22. I would try uninstalling BerkeleyDB by running ppm remove BerkeleyDB and re-installing by running ppm install BerkeleyDB. If that doesn't take care of the mismatch then you might have to look at manually removing the BerkeleyDB installation(s) before re-installing it.

Cheers,
Rob