Sitecom wl-113 usb wireless adapter, (usb ID 0df6:9071) is a zd1211 based thing, the original GPLed linux driver for the zd1211 is a .tar.gz inside this zip
A modified version updated to compile is here, and the patches for the Sitecom device ids is here. Theres a sourceforge project apparently being set up to maintain the driver.
I compiled up the modified one, and am amusing myself with wireless foo at the moment. my iwlist output confused me at the start as theres apparently at least two other wireless nodes in my apartment complex which being unexpected baffled me for a moment 