If you're using Excursion, then you should check with their help boards for assistance with configuring. The same goes with any other scripts that you have that need to be configured, and possibly updated to work with the current version of mIRC.
These boards are for mIRC assistance. mIRC, to my knowledge, maintains compatability for the settings made in previous versions of mIRC, so that if you made a setting change in 5.9 (for example), that same setting would be in 6.21, and, probably, in the same location.
