Um, wifi took a lot of hunting around, but that was for hardy, not the netbook remix.
Note that the Ubuntu Netbook Remix IS ubuntu hardy heron 8.04.1, just with a couple of programs installed over the top, so if you sort out these problems it's irrelevant weather UNR is installed or not.
Quick install guide:
First this is installed on top of Ubuntu Hardy heron, You can't try and install it over Fedora.
1. Click System->Administration->Software Sources.
2. Enter your admin password.
3. Click "Third-Party Software Tab", then click the "+ Add..." button in the bottom left.
4. copy and paste the following lines, one at a time:
deb
http://ppa.launchpad.net/netbook-remix-team/ubuntu hardy main
deb-src
http://ppa.launchpad.net/netbook-remix-team/ubuntu hardy main
5. After you have added these two sources, click Close.
6. Back on your top panel, click Application->Add/Remove.
7. Search for each of the following programs individually, and when all are selected for installation, click "Apply Changes".
go-home-applet, window-picker-applet, maximus, human-netbook-theme, and ume-launcher.
8. To make it look a bit more like the screenshots, delete bottom panel.
9. Select "Human Netbook Theme" in System -> Preferences->Apperance.
10. Whilst in Appearance Preferences, click the "Visual Effects" tab and select none.
11. In System->Preferences->Sessions, click "+add" and type "maximus" in the name section, then click ok.
Restart your machine and you're using the Netbook Remix interface!