Transferring EndNote X2 library to EndNote 7

I would like to import a colleague’s EndNote X2 library into EndNote 7. I have received files in .enl format, in text format, and in XML format, but none of them seem to be acceptable to EndNote 7. Does anyone know how I can get this library into EndNote 7?

Thanks for your help.

I suggest checking out this - which should work equally well with X2 libraries. 

http://dydo.infodiv.unimelb.edu.au/index.php?view=pdf;docid=2876;printpreview=yes

Thanks! I will ask them to try that.