Hi and welcome.
for a lot of info on the game to help you progress then I suggest having a look here
http://mission4today.com/
http://mission4today.com/index.php?name ... Base&cat=8
the version you have is very old, but good to start with, if you want to get up to date you will need to find the 1946 dvd
e.g.
http://www.play.com/Games/PC/4-/3251021 ... oduct.html
there are many more planes,campaigns and updated flight models
it is more demanding on your pc so I would check your machines specs out before buying
good luck