Mass renaming of items in SWE 2007

I need to rename the entire contents of an assembly thatcontains20 or so parts.

The parts in the assembly are called xxxx-A.sldprt,xxxx-B.sldprtand I need to rename them all to yyyy-A.sldprt,yyyy-B.sldprt

In previous versions I could open the assy in SWE2006, callup thereferences and then replace all instances of "xxxx"with"yyyy".

I can see in the baffling new version of SWE how to do them 1by 1but not just do a mass find/replace

Does anyone know if this is possible?SolidworksSolidworks Explorer