there is no such thing as team 4 (or at least Kishimoto or the anime creators haven't given them names or really shown us a team 4)
there is team 7: Naruto, Sasuke and Sakura
Team 8: Hinata, Kiba and Shino
Team 10: Shikamaru, choji and Ino
and Team Gai: Lee, Neji and TenTen (team Gai's number has never been mentioned)
other then that there is no way to know who is in team 4 or whether or not it exsists.
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Team Kakashi: Naruto, Sakura, Sasuke, Kakashi
Team Gai: Neji, Tenten, Lee, Gai
Team Kurenai: Hinata, Kiba, Shino, Kurenai
Team Asuma: Shikamaru, Chouji, Ino, Asuma
Naruto SD is a spin-off of Naruto Shippuden. It's "official" title is Rock Lee's Springtime of Youth (Japanese: Rock Lee no Seishun Full-Power Ninden). It stars Rock Lee and his team, Team Gai on missions and crosses with Naruto (star of Naruto and Naruto Shippuden).
Team Sand (Gaara, Temari, and Kankuro) was the first team to reach the tower in the Forest of Death during the Chunin exams in "Naruto".
Sai joins team 7 in Naruto shippunden episode 34
yes in the first naruto movie when the movie crew team 7 and the princess were heading to their hideout.
The Target Appears episode 97 of Naruto Shippuden