The link is from the Acer Aspire One download/support site:
Following the directions. I downloaded FF3 from the link. When Xarchiver opened, I clicked on the file (folder?) FF3.sh.zip in Xarchiver, than on the FF3.sh and I got some kind of error message. I can't remember what it said.
I can't seem to find the other site. It was for a solitaire game. I thought it was the Solsuite (TreeCardGames)site for Linux, but can't find it now. Anyway, Firefox downloader gave me the option to open with Xarchiver or download to disk. I opened with Xarchiver. A window (Xarchiver?)opened with a long list of unzipped files. Had no idea what to do from there. I probably double clicked on the first file listed and either got an error message, or nothing happened.
I've downloaded Picasa and Skype when I first got my AA1 and didn't have any problems. They both installed without me having to do anything once I clicked on the download links. I do have to start Picasa by typing a short command in a terminal window: usr/bin/picasa for Picasa, and Skype is listed in my advanced desktop menu so I just click on it to open.