Yeah, you have to change the theme to "subsilver2" under Board Preferences in order to get it to work. Don't know why we don't "fix" this theme. (As in make it HTML 3.03 compliant or something,) oh well. 
As for WiFi, your two options would be to either setup a second machine to act as a wireless ethernet bridge/router. Or to purchase a wireless ethernet bridge such as this one. Been wanting to get one of these myself for a while.
And this is all assuming that the Quadra 605 has an ethernet card. If it doesn't, then you would need a Mac (preferably a PowerBook so you can use a wireless card in it,) that has a printer/modem port so that you can use IPNetRouter to route your wireless network to your Quadra 605.
As for WiFi, your two options would be to either setup a second machine to act as a wireless ethernet bridge/router. Or to purchase a wireless ethernet bridge such as this one. Been wanting to get one of these myself for a while.
And this is all assuming that the Quadra 605 has an ethernet card. If it doesn't, then you would need a Mac (preferably a PowerBook so you can use a wireless card in it,) that has a printer/modem port so that you can use IPNetRouter to route your wireless network to your Quadra 605.