Two choices of wireless dongle thing.
I've got a wireless-g dongle which I can send with an installation cd. To be honest it's a pain in the arse to set up, but if you can do that then it's as fast as currently available (prior to Wireless-N).
Alternatively I can send you a wireless-b dongle. It's not as fast but the advantage of this one is that it's also a 128 usb drive, so I can put the installation stuff on the drive itself. That way, when it asks you where you want to install the drivers from you can just point it back to itself. I've tried this and it works as easy as an easy thing.
It really depends whether you need speed or ease of installation (with the added advantage of a wee usb pen drive chipped in). If it's basic office networking you need then speed isn't really an issue.
Whichever suits you, mate. Just let me know and I'll send the one you want.
I remember what happened to the usb wireless box btw. I sent it to DanalB.