How do I Share ISDN over a wireless netw

I currently have wired network consisting of 3 desktops and 2 laptops. They all share an internet connection via ISDN.

I am thinking about changing over to a wireless network but will I still be able to share the ISDN internet connection?

If so how would I do this. I dont mind if the ISDN connction has to go directly to one computer on the network, the important thing is that everyone will have internet access over the ISDN

Thanks.