Installing this USB adapter seems not straightforward. A bad USB cable almost made me believe that the adapter was broken and throw it away. After installing the driver, Novell login was replaced and an error occurred which didn’t allow me to login to the domain correctly. I had to bypass the Novell login and logged in as a normal local user to Windows XP.
Also creating a wireless ad-hoc network seems impossible for this USB unit. I tried it on both XP and Server version, and neither worked, even though its specification says it supports that. Maybe there are some security policies on the domain restricting that.
How to create a wireless ad-hoc network, here is an article for XP, and this one is for Vista. Don’t forget to connect to that ad-hoc network after you have created it.