First off a little history...since I was younger I had a love for model trains, but coming from a family who didn't have the extra money for me to be privied to owning them I never had the opportunity to fulfill my ambitions.  Now that I am out and on my own and living a rather successful life I have decided to pick up the hobby.  I did a good amount of research(apparently not enough) and ordered myself the Empire Builder from Bachmann as well as 8 extra railcars and about 20 feet or track.  Before I get into my plans... I'm having problems, the connectors on the Bachmann cars are different then the 8 I bought.  Which is more standard, and how do you go about replacing them.  Does anybody have pictures, etc that could help a guy out.  Thank you in advance.