I have the lovely new wireless router, works fine with the laptops and the Wii and my iPod Touch. Everything was going swimmingly.
Until we got the new fancy HP wireless printer/scanner.
Now the iPod won't stay connected to the router and the printer keeps doing the same. The only way to get them to work is to reset the router, and I don't want to keep doing that. That was why we got rid of the old router (DeviantArt tripped it and made it go nuts every single time).
I have no idea how to make all of the wireless devices get along.
EDIT: I think it is fixed, with many many thanks to bardiphouka who asked Stephen who is a genius. Hurrah!