I've been searching for over an hour now and I just want to make it look to windows as a keyboard. I tried Kade loader, flip software. I dont get the .hex crap 
The .hex file is the compiled (machine-readable) translation of the human-readable/human-editable "sketch"/source code.
Some programs like
Teensyduino compile the source code and upload the hex data into the Teensy's flash memory without saving a .hex file on your computer.
Other programs like FLIP just upload an already-compiled hex file.
Teensy has a unique bootloader that will only work with PJRC-compatible software -- it is
definitely not KADE Loader/Mapper compatible.
If you scroll down on
this page you'll find:
- Teensy Loader Application
- Software Development Tools
There are examples
here of code that can make a Teensy into a keyboard.
For a variety of examples like
this one, put "teensy mame keyboard sketch" or similar keywords into your favorite search engine.
Scott