We have found another sponsor for our team: FRM Lightweight Parts. In 2008 I have got already a set of the new 29er rims (XMD 29er) for testing and since then I have done quite some miles on them. Right after lacing they suffered a riding week around half of Lake Garda, where I unfortunately killed the front rim in an accident (my mistake). The rear rim however is on the bike since June 08 and it is still their, after Marathon races, touring and riding. Just lastlast week I hammered it again over the volcano trails of La Palma. Still no problem so far. To complement the rear rim I have put a FRM crankset on the bike and laced a Lefty front wheel with a FRM hub, both of them riding fine and smooth without problems yet. More parts are to come soon. Check their products on www.frmbike.de
Biciclista
Crema Cycles
Osprey
Singlespeed.nl
Sock Guy
Supernova
Big Wheel Racing Europe 
Nice post. Glad you figured out how to do it. Can you please tell the rest of us how now?