If you have a Motorola A855 Droid 1, that folder exists on your phone. Which file manager are you using? There's lots of sub-folders in /data/ and I am surprised your file manager doesn't see them. Make sure that the rageagainstthecage-arm5.bin file is on your pc in the exact same folder as adb.exe. The only other thing I can think of right now is to modify the command thusly:
Code:
adb push rageagainstthecage-arm5.bin /data/local/tmp/rageagainstthecage-arm5.bin
good luck and let me know if I have to modify my guide.