Before I start, the spec for my computer are Mac 10.9, latest java, and the newest version of Swiftkit downloaded.  I had the problem with the black screen and changed it to the Dl version (which allowed me to play Rs3) but how do I get Swiftkit to work for oldschool Runescape?  I've tried going to the oldschool webpage in the browser but it just gives me a black screen.  Any suggestions?

You can modify the RS3 Download version so that it loads up Old School instead.

 

There's some instructions on how to do this here

http://services.runescape.com/m=rswiki/en/RuneScape_Client/Multiple_Configuration_Setup

Okay, I have now done that, but there is another problem.  Even though I am now playing oldschool through the client on swiftkit, the utilities are still for RS3 (hiscores, prices, calculators).  Is there a way to change the format of the client to focus on oldschool data?

The lookups and utlilities currently only support RS3