Hi,
Changing the column names of the CSV files is easy. You can do that with Excel or OpenOffice Calc.
It takes the same time regardless of whether there are 2 lines or 2 millions lines in the CSV, since you only have the change the column title for each column of the CSV.
There is no tool in HikaShop to link the columns of your CSV to the columns in Hikashop. That's an improvement we want to add in the future.
CSV improved (which is compatible with HikaShop), might have that capability.
However, you can just do the change once in a CSV, and save that modified CSV for next time. Then, when you get a new CSV to import from that same person, copy / paste the row of the column titles from the modified CSV to the new CSV and it's done, 30 seconds top.