Neither the Itemizer plugin nor the Itemizer add-on have anything to do with *.txt files. Those files contain regular Windower commands. You just have to replace this
Code
input /get ...
input /put ...
with this:
And this:
with this:
Once you do that everything should be working as before. The ; has nothing to do with Itemizer, and you can still use "", you just don't have to anymore. Check Itemizer's ReadMe file for a more detailed descriptions of how commands work.