How to finish the Dexter's Laboratory: Deesaster Strikes! GBA game?

Solution 1:

One needs to fix all 43 machines and capture all 124 small Dee Dees. From the start menu your game should show 100% complete. Assuming 100% completion then when Dexter is in the Hub walk him over to the left where the machine is that holds all the captured Dee Dees....and press the A button....a recombined DEE DEE walks out of the machine and the game goes to credits.