Well, we're not quite there yet.
First off, the tce-load -w 'etc.' command d/l'ed a LOT of stuff, some of which was already in my tce directory. I realize this is probably a deficiency in tce-load; only mentioning it to bring it to your attention.
Next, would it not have been more efficient to use '-wi' as the switch rather than doing it separately? Not that big a deal but I'm a simple guy here...
Also, the explicit path to the tar.bz2 was required. (in my case it was my tce dir.)
That last step either has me confused and I did it wrong or some combination of the above. In either event it did not work. You said, "Finally enter './exittc'". I tried that in aterm. I tried it as sudo. I added it to the .profile file. Net result is no change, even after reboot.