I guess I'm not sure about the point either
. Except that I was looking through the bios flash directions to figure out how to back up my bios before I started flashing, and although the directions were kind of poorly cobbled together they did mention that the download would be in something like a .exe or .zip format. I wasn't sure if the .rar format was a mistake, just another inconsistency in the directions, or a correct file.
And again, since both XP and ME can handle .zip natively, in my opinion I wouldn't use a compression format that required people to go download a third party utility just to extract some files. Anyway, that's just my opinion.