Not so stupid question, Godz - it's tricky.
While playing, press space. Then, using your mouse, move the cursor between your mouth and the wolf pack. You will find a new menu - options. Then, select "Save as" and type in the name. Done.
To load, enter "Simulation" or "Scenario" from the main menu. There will be a new icon of a floppy disc. Press it and you've just loaded the game!

k:
OMG! I'm a forum hobbit now!