You may find what you're looking for on a website called kegworks. They sell complete kegerator units & the kits for converting your existing refrigerator into a kegerator.
BTW, neither Foster's or Heineken are the types of beer that require special taps. The kegs you are looking at purchasing may have a specific type of connection, but that has nothing at all to do w/ the beer inside the keg. There are some types of beers that actually do require special taps, etc., just because of the type of beer they are -- I know Guinness & some stouts are like that.
If you have more questions, please feel free to ask or PM, I'll get DH to answer them for you. The brewing community is a small one & works together to help each other, so that wouldn't be any problem at all.