What are you wanting to achive by plugging in your USB stick? Upload a CCcam.cfg file? Enigma/2 receivers are different to the closed source receivers like TM5402. There is no such thing as Phantom patch for the Twin.If you had flashed teh receiver with the wrong image, it would not boot.
Most people use FTP programs on their PC (like Filezilla) to transfer files to and from the receiver. Some images (call it operating system for now) already have samba installed, if that is the case, you can just use Windows Explorerer to send files to your receiver. Your details need to be on the relevant files. Until you say what you are doing, nobody can help.
I strongly suggest you install a linux compatible file editor like "Notepad++". This is not the same as "Windows notepad". It will make viewing and editing soem files a lot easier for you.
As a minimum, you need to learn the folllowing:
Transfer files to receiver
How to install ipk files
The following will be helpful for you
Edit/Transfer channel lists . Programs you can use: E-Channelizer, Dreamset, Dreamboxedit.
Issue linux commands. Putty is a good program
A tip, hope you don't mind.
You will get further, quickly if you start saying exactly what process (not just the goal) you are trying to carry out. What you have done, and what you have got stuck at.
For example, I have a cws line from a friend that I use in my TM5402, I am trying to transfer these details to my TM Twin. I have put the USB stick in the receiver, but don't see an option to add the details.