I don't remember where you are with your drive. Sorry I didn't write sooner, I've been researching probably the same thing you need. I can't open up two IE windows so I can't tell you where to go. Just do a Google search. You want to know how to install a hard drive, type that in - minus the how to. The first five or more links were VERY relative! LOTS of info! I've been cruising that for the last hour I guess!
You don't have to have the same brand HD's. I just opened up my new HD and it comes with a new ribbon cable, and it has three connectors on it. One end plugs to the mother board, the end goes to the Master drive while the middle connection is for the Slave. If you don't have that type cable, you'll need to buy one. Any local repair shop will probably be able to sell you one. They most likely will not give ANY information. Your old HD had a ribbon cable that went from the HD to the mother board. If that "old" ribbon fits your new HD, take that ribbon to the local computer shop and tell them you need one just like that but with a connector in the middle. You might take your hard drives in case they won't to check their connections.
Your new HD should come with informative guide book. You should also be able to get help from the manufacturers site. - - if you're willing to put the time in.
Best of luck,
bamakodaker