To answer ppee_ex's above question/s, Pokemon Channel is a Gamecube game, where you basically watch Pokemon TV shows and play mini-games. The only upside is, on the PAL version (this is the version sold in the UK and Australia, maybe a few other places, but not the US version) you can receive Jirachi from the game once you complete it.
There IS an event for Deoxys going on now, at the Space Center in Houston, Texas, but none in Brazil to my knowledge.
You actually can NOT catch Ditto in R/S...Ditto's in EMERALD in the Fossil Maniac's house, but not available at all in R/S.
Having an Illumise with Sweet Scent won't increase your chances of finding a Volbeat. Unfortunately Volbeat is only 1% of all the Pokemon in that Route, so it's VERY hard to find (basically you have an average of only finding 1 Volbeat out of every 100 Pokemon you see on that Route), but just keep searching, it's there.
I THINK I managed to answer everything shane didn't yet... XD