A good glitch to get the dragon balls,
Majin buu saga
where you fight Super Buu as SS3 gotenks.
Destroy the main building in Kami's lookout, and you will see a dragonball, grab it and defeat Buu using the "Super Ultra Buu Buu volley ball attack"
Repeat, the dragon ball will be there all the times. Once you have gathered all 7 Shenron will come to grant you a wish, you can pick one at a time.
1. The Great Ape
2. The Great ape Vegeta
3. Master Roshi
4. Kid Goku
5. Tao Pai pai
6. The true world tournament (battle gate)
7. and password mode which can be opened using the "Duel" selection from the main menu.
There is other places to find dragon balls, but the one I listed it probaly the easiest.
If you have any more questions, you could also ask at my need help topic, which can be found by clicking this link:
Link
Hope I could help.
i think d one against chaozu...where u r tien...is d easiest
u get d dragonball at same place...as u sed....
but considering ur just against chaozu n u r tien...
so very easy.....just destroy d main bldg then get d dragonball...then defeat chaozu...which is sooooo easy...