Current setup: Netgear DG834G connected to PC running Vista Ultimate via ethernet plus one iBook which connects wirelessly to the Netgear. No wireless receiver on the PC.
I want to add an Airport Express so that I can stream music from iTunes to the speakers in the sitting room but it ain't working. I get the solid green light if I connect it via ethernet to the router, but it won't connect wirelessly to the router.
Connected by ethernet, I can't see the Airport Express in my network centre though it's showing up as a connected device in my router's configuration page.
Update - I've got it working but it's a very unsatisfactory fudge. I've got the Airport Express wired to the router, in effect creating a second network. That would be fine except that I can't set up any security at all under Vista for the Airport Express and so as it's connected to my router so that when I stream music I am also connected to the internet, I have an unsecured network for all and sundry to access. Apparently there is no way to set up security yet in Vista for the Airport Express because Apple hasn't yet released any Vista-friendly software.
Anyway, I had the brilliant idea of trying to set it up using my iBook, and needless to say it's now working perfectly. Only slightly annoying thing is that I don't seem to be able to enable MAC address filtering. But it is nice to be able to stream from the PC to the speakers.