A "simple" solution, no modding or anything required (Wii doesn't even need to have homebrew):
Get Proximodo from here:
http://proximodo.sourceforge.net/
Run Proximodo on computer.
Goto "Settings" and tick the box "Allow IP range" (leave 0.0.0.0 and 255.255.255.255 as the start and finish)
Goto "Config", find the "Identification" listing, expand it, then double-click any of the "Agent" listings. In the window that appears, change the text in the bottom box to the desired user-agent. Optionally rename. Close editor window.
Tick the box beside whichever listing you edited.
Follow these instructions to setup your Wii to connect via proxy (use your IP address as the proxy address - get it by pressing Win+R, typing "cmd", press enter, command window appears, type "ipconfig -all" and press enter, it should be listed) :
http://www.hidemynet...m/?a=setup&t=30
You should now be able to connect and the user agent given will be the one you entered. You can check the user agent here:
http://whatsmyuseragent.com/
Downside: you must have PC on and Proximodo running any time you want to connect your Wii to the internet.
EDIT: Been poking around the internet channel. Haven't found user agent yet, but found something else:
If you extract 0000002c.app (it's a U8 archive), you will find a file called "filter.ini", with the following contents:
Code:
[prefs]
prioritize excludelist=0
[include]
file://*
[exclude]
*
Looks like this file prevents file:// URLs from being opened. If you remove that line, you should be able to open local files from SD card perhaps. (e.g. flash games etc.)
i.e. making the file like this:
Code:
[prefs]
prioritize excludelist=0
[include]
[exclude]
*
EDIT: Most of the contents are U8 archives, looks like within that are some ARCs. I haven't poked around too much, but what I did see is loads of images, in common formats (PNGs, GIFs - not TPLs) that could presumably be edited pretty easily to change the look of Opera. There is also a large number of JS files (looks like a lot of stuff is written in JavaScript, could probably be easily edited if there was some benefit to doing so) and HTML files (most pages displayed e.g. start page, bookmarks page, "about page" page etc. are all HTML files) - could again most likely be edited to change the look of Opera.
Looks quite modifiable to someone with the time and some JS and HTML know-how. What could come of it I don't know, but I'm sure somewhere in there there is quite possibly a way to change the user agent.
On a side note, I did notice a few icons that aren't used (e.g. icons for downloads) - just leftover files from PC Opera, or clues about disabled features? Perhaps someone poking around the channel a bit more could reveal the answer. I'd guess it's quite possibly the former, but if it were indeed the later and they could be enabled, it'd be pretty cool.