To get started, click the 'picasaSlideshow' button when replying. Next, copy the RSS feed URL from the album you are interested in displaying, it should resemble this:
Original RSS Link wrote:http://picasaweb.google.com/data/feed/base/user/LatinPyro/albumid/5530047748220568097?alt=rss&kind=photo&hl=en_US
You want to remove everything but the bold content, above, and place that context between the new tags below.
[ picasaslideshow ]LatinPyro/albumid/5530047748220568097[ /picasaslideshow ]
Happy posting