Yes. If you hover over the .exe the version will show up in a tooltip. Assuming that is what you did, your Mame version is 0.145. To make things even more complicated, for all of your games to work, your rom set version needs to match your Mame version. If you don't know what version your roms are, then you can use tools like ClearMamePro, or Rom Center to audit and fix your roms. Make a backup of your roms before using either tool. Hopefully that will be enough information to get you started. Google is your friend if you need help with either of the rom tools mentioned.