Originally Posted by: ToucanDelightIs it finger picking and then into the chord?

You can do it that way. It's definitely not going to sound right if you mute the strings and strum across.

Since you want to use your pick for other parts of the song, use hybrid picking: hold your pick as usual, pick the low bass line on the bottom E string with your pick (thumb and index finger), use your middle (and or ring finger also) to pluck the high E and B strings at the same time.

I don't know how Jimmy Page actually did it (maybe hybrid picking with a thumb pick?). But hybrid picking is the best solution.