cFolders: How to use 4.6c as Backend?

Hallo,

we are installing an cfolders on a WAS 6.40 (cFolders in DMZ). The backend system is a 4.6c...Does anyone has experience, what is necessary to install to use the trans cfi02 and cfe02 in this system? SAP says: it`s possible but how? 😊

Thanx for help and kind regards

Holger