Yep;
sounds interesting since i cycle from Berlin to Hanoi (Vietnam) crossing Serbia;
I start my trip end of this year. However, my expedition route starts here in Berlin, East Europe, Scandinavia, UK, FR, ES, PO, IT, coming back to Berlin and continuing in August-2009 with 2 team partners and a camp mobile;
it's not not only a bike expedsition but also a culture project
more infos:
www. berlin-hanoi-2008.com
However, I think it's too late for you to start the trip to Serbia in Aug-2009 , isn't it?