Do not forget, when generating, the only thing that will be set is the gender.
When you want to catch it, use an IV Standard Seed with the Hidden Grotto Encounter Type. Select the desired IV spead and the PID frame - you know the drill.
Edit for kitsura: The starting frame thing is really iffy, at least when I do it. The best you can do is to listen to your Chatots to determine your frame then you won't need to readjusting every time you missed something, because it is really annoying in BW2. I recommend you 400 Hz, here you go.
When you want to catch it, use an IV Standard Seed with the Hidden Grotto Encounter Type. Select the desired IV spead and the PID frame - you know the drill.
Edit for kitsura: The starting frame thing is really iffy, at least when I do it. The best you can do is to listen to your Chatots to determine your frame then you won't need to readjusting every time you missed something, because it is really annoying in BW2. I recommend you 400 Hz, here you go.