Installation help Bellum Crucis 6

Thanks Housekeeper for your interest.We don't know what we are doing, really............Anyway,we installed it to Desktop following some forum research ( but did not "disable UAC " first, whatever that is ....would it matter ? ). We just tried running it as Administrator but got the same "Windows could not find kingdoms.exe ".We looked for "Administrator" in options to go back and install it under instead, but Administrator does not appear in that particular list.Since we have been playing Kingdoms, why can't Windows find it ? Step by step instructions for beginners is what we need !