2001 X5 4.4i-new to me & questions

[Hoser]

New to this site and to this used 2001 X5. Overall decent shape but have a few questions. The PO threw in a pair of new HID with Halo headlights. Would I need to simply fool the system with 4 ballasts & 4 -50 watt resistors or is there an easier way to use the new style headlights? Using them is not a top priority-doing all the maintenance that has perhaps been ignored will be job one. The engine had a fair bit of noise from the VANOS, the dealer talked me down on it saying it has been their experience it is mainly solenoid issues. I purchased the car and before the one hour hiway drive home, I put a part can of Seafoam in- all was quiet from the engine by the time I got home. I will proceed to change oil and check all levels-including the auto. I would ask another question- can someone recommend an OBD software bundle pertinent to my BMW- I would be interested in something at the hobbyist level-this is not a new career move for me. Appreciate any and all help- thank you.