Wabbit Calculator
How to get a TI-84 Calculator on your Desktop with QUAD
(1) Go to the following Link:  wabbit files
(2) Download all 3 files in the folder's site  to a folder on your PC -- the "Download Folder" will work.
(3) Open the executable file by clicking it.
(4) When asked for a ROM file, insert the downloaded file with extension .ROM
(5) After seeing a partial calculator, click VIEW on the partial calculator's menu and select skin.
You might have to do this twice!
(6) You should have the calculator. To get QUAD, drag the downloaded QUAD into the screen of the calculator...DONE!