Okay, I've been fiddling with this for a couple of days now, and everyone seems to have some idea or another about how to do it, but I finally got it to work. So, here is what I did:
1) Download opera6_1.5.4_arm.ipk from the ZUG Downloads section (listed under Applications as Opera6)
2) ipkg -dest sd --force-overwrite install opera6_1.5.4_arm.ipk
(from the directory you placed the file in, obviously. The --force-overwrite is probably --overkill, but I've installed opera6 and 7 about 931 times over the past few days, so it can't hurt)
3) ipkg-link add opera6
4) Go to the Settings tab, click "Reload Icons"
5) ln -s /opt/QtPalmtop/opera /usr/share/opera
(this will enable png files somehow...don't know, frankly don't care at this point)
6) Go to the Settings tab, click on Libraries, List, Applications, Opera Browser and okay it.
7) Go to Applications, click on Opera Browser and surf your happy heart out.
PLEASE PLEASE PLEASE leave a message if this works or not so that this thread can be useful!!
We need more HOW-TO documents on this stuff. Most of this was culled from this message board, but with the *cough* wonderful *cough* search functionality and rampant thread hijacking, it was DIFFICULT to hunt down and even more difficult to sort out.
I hope this helps someone. If helps you, and you happen to get some other PITA install to work, consider writing up something along these lines. Good Karma and all that...