I finally got the SmoothScroll extension installed. I also tried the Classic Scroll extension which is on the Opera site. Alas, neither work well. I use a Fujitsu laptop, and a trackball. The trackball scroll wheel works fine, but the laptop's touchpad does not - jumps down the page.

In the meantime I discovered the Comodo Dragon browser, which is based on the Chrome engine. It works almost as well as Firefox, so that's what I'll use.

lem729.....Thanks for your replies. You obviously spent quite a bit of time on this.

But this info doesn't compute ... Sorry. Something is missing.

" From there you find the Chrome extension you want to add to Opera and install it."

This shows INSTALLED extensions. It does not show prospective extensions.

If I select "Get More Extensions", I see a bunch on the Opera site. But Not SmoothsScroll.

If I search for SmoothScroll, it is not found.

" You should not be getting a blank page, when you click on: [google link] "

You tell'em ... they obviously aren't listening to me. Firefox does.

"Even if I go to the store with another browser, I can see what's in it."

Another browser is not Opera. I downloaded a .CRX file, but I see no way to install it.
That's why I asked how to invoke "Download Chrome Extension."

Even though DCE is installed, it won't install the scroll extension if it can't be located.

Any more help will be appreciated, but it's not that important. If Opera doesn't care, then why should I?

How do I invoke "Download Chrome Extensions"? It's installed, but if I open the Chrome Web Store page I get a blank page.

https://chrome.google.com/webstore/category/extensions <--- is blank also (recommended on the "Opera add-ons" page)

I have begun using Opera (v.21) as a replacement for Chrome. It is much more stable, and less of a hog. But it has another very annoying characteristic: URLs often don't connect (20% of the time). A link will open a new tab with "LOADING" shown in the tab, but no page is ever loaded. If the link is opened in yet another new tab, it may load. The bad tab (stuck on "Loading") needs to be closed, since dragging another link to it will not open a page either. It is just bad. Incommunicado. This never happens with Firefox.

I have begun using Opera (v.21) as a replacement for Chrome. It is much more stable, and less of a hog. But it has a very annoying characteristic: scrolling jumps rather than scrolls. The scroll marker jumps more than one page at a time. This skips a lot of the web page. It is impossible to view charts or pictures without using the cursor to grab the scroll marker and move it precisely. There seems to be no way to remedy this; scrolling backwards operates the same jumpy way. This does not happen with Firefox and Chrome, when they are all open at the same time. (This is on a Windows XP laptop with a scrolling touchpad.) So it seems to be a problem with Opera. I have checked Settings for a way to adjust this, but find nothing. Search for 'scroll' delivers nothing. I will have to look for yet another secondary browser if this can't be remedied. Please let me know if changing this is possible.