You probably already found this out :( , but if you didn't here it is:
The second episode in season 1 is called "Seeing is Believing" Here is the description from Wikipedia:
After a lecture on nuclear power in class, Odd begins casting for a traditional rock band called the Pop Rock Progressives. They need a drummer, and several try out for the position, including Nicolas. Nicolas turns out to be the best, but Odd is reluctant to let him on. Meanwhile, Xana decides to overload the nuclear power plant by storing electricity in a transformer and unleashing it on the plant all at once. Unsure if they can stop such an event, the group votes and, by a 3 to 2 vote (Aelita being the swing vote), decides to tell the authorities. Yumi goes to inform them while the others stay behind to deal with Xana. Now they must deactivate the tower before the city is turned into a nuclear wasteland. Not only that, they also have to do so before the authorities find out about the supercomputer. In the end the tower is deactivated and after a return to the past Nicholas and Jim are added to the Pop Rock Progressives.
List of Code Lyoko Episodes:
http://en.wikipedia.org/wiki/List_of_Code_Lyoko_episodes
He go's to lyoko in episode 65 "Final Round" the last episode of season 3
Yes, there are two Code Lyoko Christmas episodes. Season 2 episode 19 - Cold War and season 4 episode 14 Distant Memory.
That was the ending for either season 2 or 3
Season 1, Episode 13, Just In Time :D
on episode 46
He go's to lyoko in episode 65 "Final Round" the last episode of season 3
Code Lyoko Episode 1 : Season 1 : Godzilla
Yes, there are two Code Lyoko Christmas episodes. Season 2 episode 19 - Cold War and season 4 episode 14 Distant Memory.
That was the ending for either season 2 or 3
Episode # 1 : "Teddygozilla" .
Season 1, Episode 13, Just In Time :D
yes. MoonScoop decide to come out with a new season of Code Lyoko. The first episode of season 5 premimed 2/13/09
it is called lyoko minus one you con wacth it on youtube.
on episode 46
Yes there is. It is actually the pilot episode but it was made last. Its called Garage Kids.
good question you may want to look at season 4 episodes
The first episode of Code Lyoko is called Teddygodzilla. There is a 2-part prequel called Xana Awakens which people sometimes mistake for the first episode but it isn't. It is good to watch that as it explains a lot of the series.