No
probably
It's possible.If you cheated (used a GameShark or ActionReplay) to obtain certain Pokemon, you COULD encounter glitches.Like, I think that there is a GameShark code to modify a Pokemon in a certain slot in your party into a certain Pokemon. If you tried to trade it, a lot of issues might occur.But if you used a code to encounter a certain Pokemon, you SHOULD be fine.And if it's just a WiFi battle, you should be cool.
your Pokemon will be lowered to level 50. and you may not use Pokemon who are legends or Pokemon who can use moves that they normally not learn(cheated or hacked).from Kevin Elfering.
by using wifi or wireless at a certain place
Only if all your Pokemon in your party are legit
Using the WIFI link in Pokemon, it is possible to trade Pokemon with people around the world.
try using wifi
You cannot.
By using WiFi or IR or in-game trades, the list goes on and on
You can't get WiFi in a Pokemon game on a PC.
No (unless you trade through platinum first)
Using WiFi you can trade w/ others online.