Okay...
For those of you who HAVEN'T BEEN to
www.beemaster.com (and I know who you are :twisted: ) there is a link to a website which (although technical) is a Solar System Generator program, not only showing you planetary positions, but also man-made objects (observers, explorers and satellites) and you can see where everything is - that is where I got those images showing that Pluto DOES NOT follow a horizontal path (as do) the other planets.
http://space.jpl.nasa.gov/ is the site (notice the name - I say they have clout in the space field) and play with the settings and watch your planets from other planets and moons - see where stuff will be on certain days in the future or past, etc. EVEN CHECK OUT the alignment of planets on December 21, 2012 (the Mayan Calendar date which we all wonder what it means) NOTE - I'll let you look that one up, but I do see an interesting spiraling of the planets on that date UNLIKE most any other date I've entered.
So, go there, play and learn stuff about our solar system - especially the MOONS of other planets - if we have life out there, chances are it is on a moon of Saturn or Jupiter (this from many high ranking space specialists such as Richard Hoagland)
Anyway - Pluto is cute and that 249 (I've also read 248 to 251 year cycle) surely seems long - but remember THAT is in EARTH YEARS, in Pluto years, it is only ONE YEAR!!! to Plutonians, Earth whizzes around the sun like a humming bird around a nectar source :)