I got the oil lines made locally by a hydraulics shop. They cost about 40€ so pretty cheap
the oil in is the smaler one. The oil out has a flange and it connects with 2 10mm bolts to the turbine housing. The "autoflare" fitting I used to connect to the original oil line coming from the filter to the OEM turbo is pretty simple to use. It has sort of a ring that you put on the OEM oil line (cut with tubing cutter of course) and after that you just screw the fitting realy tight and the ring makes a tight seal between the tube and the new oil line
The fittings are commonly used in hydraulics so you should find them easily.
Beacause VNT20 uses 4 bolts and the manifold has only 3, I had to make an adapter plate and mod the VNT20 flange a bit. No welding needed. I used a drill with machining bit to make 2 of the holes closer to each other on the turbo and made an adapter plate to connect to the third bolt coming out of the exhaust manifold. You can see some pictures of the process in my photo gallery. But with your turbo having 3 holes for mounting that method wont work. If the manifold bolts are close to the ones that your turbo has then you can propably machine the holes on the turbo with a drill to make the holes allign. If they are too far, then you will need to make/get made a adapter plate between the manifold and the new turbo. Heres a thread about another VNT20 install :
http://forums.tdiclub.com/showthread.php?t=128303
In the pictures you can see what kind of adapter plate I mean. It has suitable holes to connect it to the manifold and threaded holes for the turbo.