What is an .INI file and how do I write one for that fletching script?

When I try to run EQ now it is saying Incorrect Client Version.
What does this mean?

thanks for all the help, you are great. I will read that thoroughly.

I don't really know what I am doing so I will tell you what I did. I saw the fletching macro thing on the macro page and I didn't really know what to do so I just opened c++ and went to New and then Macro. Then I just copied and pasted this in the window. #turbo #event CombineFail "You lacked t...