No worries mate. Just make sure you find a 32bit version of windows on the computer or the software won't work.
It might be worth checking when you've got it connected to a PC that you're running the latest firmware as I can't remember it happening to me since I upgraded both of mine.
If you go here
http://www.losi.com/Support/XcelorinDownloads.aspx you can download the latest version (which for the sensored ESC is D010130.lsc). Make sure you get the correct one though as putting the sensorless firmware onto a sensored ESC will turn it into an expensive paperweight.
You can also get the latest version of the Setup software from that link too.