Cant find lost download

I don’t know if anyone is familiar with a game called Americas Army. But, anyways I recently tried to download the new version, it automatically goes to my primary hard drive, wich doesn’t have enough room. It stops downloading halfway thru and I now have a HUGE file(s) on my C drive that I cant’ find. I only have 7.4 MB left on my C drive. I’ve tried searching all files created on that date but that search came up empty. I’ve tried to manually look, but to no effect. Any and all help will be greatly appreciated. I am using Windows XP by the way.