As I already did for MKSC i renew this utility based on Excel (the '97 edition should be enough to open and use it, maybe Windows is needed because i create a text file and i use notepad to open it).
It writes the submission message (W/O failing with the circuit names Roll Eyes) for you, based on the time on the sheet you have marked with any background color.
1 )Download
http://www.unbelsito.com/mkwii/mario_kart_wii_tt.zip2) Unzip and save the xls file where you want.
3) Open it (and let the macros run - if not you will loose any features).
4) fill your submission name field
5) highlight the background color of your new prs (white means your time is already on the site, any other color means your time is new)
6) double click on "create Message"
One file will be created (and opened) in the same directory where you saved the Excel file.
To submit, just copy'n'paste the text on the Yahoo message.
Try to follow one of the time format i used for lap and 3lap.
I used R for the retro tracks, if needed just change the abbrevation on the top of the cell region.
My macros do not work with Open Office, sorry.