Hi Bertie B.
I have a brother-all-in-one printer set to my computer via usb. I have two computers both Dell but different models. one comp is mine the other is my wifes and she does more printing than I do. Both comps are connected to BT Hub wirelessly via WLAN 11g USB Adapters and are aprox. 25ft from Hub. I set mine up using NETWORK MAGIC. click here
It is easy to set up and works a treat. (so much so that I bought the license about £15) You can also share files and folders between the comps. Hope this is of use to you.