I went to it last year. Great party! Steve Stoll was a no show, Echoplex was great. Its held in the middle of a woods.. big main stage for techno with a couple of smaller tents for house, d'n'b, etc..
As Inigo said, get the train to Pardubice (a really nice/small university city, worth checking out), go right out of the station & walk about 10 mins, cross the road to the bus station.. There'll probably be a crowd to follow!
You pay the bus driver as you get on, its about a 1/2 hr journey and you can buy your ticket at the main gate.. about 12EUR!! (They'll take any booze off you as you go in). The bus in the morning brings you back to the train station.
Damn, I wish I was going again.. happy memories :)

Here's a link to czech bus/train timetables in english, search for Whereever-Pardubice
http://www.vlak-bus.cz/ConnForm.asp?tt=a&cl=E5

Have fun!
Stephen