I have Windows 7 - and Excel 10 . I had trouble loading program and figuring out what the Port thing meant but once (mainly because I am not great with loading programs) Once I got the program loaded it worked so slick for our race.
My 2009ish version was not vetted by Microsoft so it pops up a scary "this may damaged your computer message". Have to keep hunting for a COM port it likes. Loads about 4 'splits' per second. Takes a 15 step procedure to download and translate to common (1:02:03) type time format. But I keep buying more Ultraks: own 4 now.