Auto Zoom Compensation by Expression?

Hello, well, I'd try to explain... I want to add some text following my Puppet
Pins to identify' em during animation tasks and the good thing is... I have all
working right! But...

...But I'd like it don't be resized when I zoom the main window, well, I'd like
the text always have the same size to be "readable" all the time, just
like Puppet Pins and other manipulator indications do, you know...

I don't think there's any way to do that. The magnification of the comp window
isn't accessible to expressions.

Ouh... I really afraided it... but I watched all that "Layer Space
Transforms" commands and I wondered if some of they could help me, well...
The best thing is I'm now totally sure and now I can go on with the real work,
THANKS for the quick help!