The post here ... http://www.vectric.com/forum/viewtopic.php?f=27&t=9837
Shows the procedure for importing a tool databse from an old version of Aspire into Aspire 3. The procedure is exactly the same for VCarve Pro, but the default location for your existing tool database on English versions of Windows will be ...
C:\Program Files\VCarve Pro V5.5\ToolDatabase
or
C:\Program Files (x86)\VCarve Pro V5.5\ToolDatabase - for 64 bit windows.
Brian