Looking for PDP-11 Equipment

Hi, everyone. :-) I'm looking around for businesses that sell new or used DEC equipment...and a little bit of help as well, since I don't yet know PDPs as well as I'd like to. ;-) I'm in the process of getting a PDP-11/23+ which has no hard disks or tape drive. The computer itself comes with a few cards, but most of them I'm not sure what I can do with. The cards that come with the system are: M8190 (11/73 processor) Emulex M8087 (No one has been able to find out what this board is...wrong numbers?) Berg M8020 (Single-line serial EIA sync interface) With that in mind, what do I need to get the system to the point where it will boot? I know what the processor card will do, but what about the others? Thanks in advance, Chris