we setup three store Store View Name's a long time ago when this should have been Store Name's. 

We are now busy rolling out multi-language and this is where I discovered the mistake. 

Is there an easy way (and how) to move a Store View Name to a Store Group Name (1 up in the hierarchy)

    Website             Store Group       Store View
    ------------------------------------------------
    www.domain.com	    domain.com	      store1_NL
    www.domain.com	    domain.com	      store2_NL

becomes 

    www.domain.com	store1		NL	
    www.domain.com	store2		NL
    ...
    www.domain.com	store2		EN
    www.domain.com	store2		DE
    etc

Thx!!