I am looking into wifi for setting it up on several computers in my home.
2 Windows machine and off course a pegasos2.
What is my best chance: Go for a wireless ethernet bridge or search for a prism2 pci wifi card?
Can anybody recommend a type/brand bridge or wifi prism card?
Or is usb possible somehow?

Don't have any personal experience, but maybe the thread below contains any valueable information for you?

German thread

Google translation

I would recommend a bridge. If you use a WiFi card in Pegasos, you will be forced to use WEP encryption on your wireless network, because MorphOS driver does not support WPA and WPA-2. WEP encryption is very weak and easy to break in minutes.

Hi, I use a Multi-function Wireless Access Point with a client mode. You only have to configure the client mode and log in with it. You can go to the internet via ethernet.

This model has two LAN-Ports.

http://www.airlive.com/product/product_3.jsp?pdid=PD1217473992975

Perhaps there are other models with more ports.

It works perfectly for me.

Thanks for the tips.
I go for the bridge and I already ordered one:
The asus 330gE the one they use in the german thread only this one uses wap2 and has a better antenna.
Hope it will work and next holiday I can also use the wifi provided one several locations.

I'm using this one. Works perfect for me D-Link DIR-300