Visual SVN repositoties Tree

[Sato]

Hi,
i have a question on Visual SVN Server, the standard repositories
folder tree is like this :

Repositories
!---REPO1
!---REPO2
!---REPO3

where in each folder "REPOx" there is directly the repository
Database.
Is it possibile to insert a level and have a folder tree like this ?

Repositories
!--RepoGroup1
      !---REPO1
      !---REPO2
!--RepoGroup2
      !---REPO3

Thanks
Andrea