Roof bars again!

Ok I know there has been threads on this before but i want to make sure i buy the right thing. I want to buy roof bars for my 04 Ulysse but don't know what to order and what to avoid. I checked out thule roof bars and on different sites there seems to be a set fot t track and no t track vehicles so which is mine? My car seems to have nothing on the roof not even runners that other cars have so what do i need to buy? Or am i opening one of those famous can of worms that i would be best avoiding? Would i be better getting the wife and kids to nurse the luggage when we go on holidays??? I just dont want the hassle of going through different systems until i find one that fits but takes a week and a welder to fit.

I think you can choose only the original ones, which are linked to two roof rails that have previous to be fitted on the roof with four bolts. I don't know other systems that passed for our car. Visit www.eurovan2.com, there are the instructions to fit the roof bars (use the search function).

Bye