Yeah, I have this same problem....I don't know where to find me .exe file, so I don't know what version I have.
However, I tried to download the BAT Update thingy above on the SC4 Devotion page, but whilst installing it it said "Old File cannot be found," stopping at 67%...I know it needs the EP1 to be installed, but it has an ERROR when I click the link below the file....I also lost the original case of my CD so I don't know what my individual CD serial number.
I guess Im screwed huh..if not, PLEASE help me...