Welcome to the world of UDM Mr Dragman.
Yeah, don't be shy
just drop us a line if you wanna ask anything. Or better still, browse thru the threads on E36 you can find loads of information.
Nowadays, HIDs are cheap, you can get decent quality one around RM250 - RM350 per set. As for the AE (Angel Eyes), if you are using original headlamp, then you can purchase the AE separately and install them.
Alternatively, there are built-in AE in some aftermarket headlamps like mine, a DEPO set (by the way, I am thinking of selling off my headlamps coz may wanna change back to original lamp... anyone interested?)
Goodluck and hope to see you posting pictures of your car soon.
Cheers