> I bought an rj45 usb dongle

Only certain chipsets are supported by MorphOS, see here.

> to enable wireless networking.

An "rj45 usb dongle" enables wired networking through USB. Are you sure what you have is an "rj45 usb dongle"? If so, what you need instead is what's been called "wifi rj45 dongle" by ppcamiga1.

> w10

wl0