You will have to use the Lith rez batch file and edit it to load the rez file ( right click on the batch file and go to edit and it will open in a word pad then and the path and the destination save and double click on the lith rez batch to load it and about the .DAT files we can't use these and was told that we can't convert them either
( this bits realy bad for me all I do is take an exsiting map and modify it in most of the games I play I'm not that proficiant at making map)
Hope this helped
User_Program

The Sample maps are in a seperate folder in the Tron tools