updating field marshall edition

[Roodboy]

I have spent my evening trying to get the update
here is what I have done so far
downloaded multiupdate and multisetup
Couldnt figure out how to uninstall so moved game to recycle bin
then figured out how to uninstall
now I cant update because I dont have the game anymore
tried to bring it back from recycle bin with no luck
any idea whats next?
Im not a very computer literate guy but this seems to be much harder than necessary