MGeo:
Thanks again to Coding Badly for work on Tiny.
You are welcome.
If I do not plan to use mills/delay in my app, is it possible for me to disable Timer0 within core, or would the be major surgery?
Should not be too difficult. The code in question starts here...
http://code.google.com/p/arduino-tiny/source/browse/trunk/hardware/tiny/cores/tiny/wiring.c
Put a conditional compile around or comment out everything in init (bottom of the file) that starts with "MillisTimer_".