Norton Files found among Shared files folder in "My Computer"

In "My Computer" (the main 'folder' which gives information about disc drives acanners etc) in my Win XP SP3 I haved a Shared Files folder containing among others a Norton folder containing two more folders:

 

{NIS19113-SHPD-FSd21017}  and

{NIS_prod_UPG_1.5.30_18.1.0.37}

 

Inside each folder are five  files which appear to relate to the installation of NIS2011 and NIS2012.  Are they just hangovers from the initial installations? I wondered why they were there - do they still serve a purpose?  Can I safely delete the Norton folder and its contents?

 

I would appreciate advice. 

 

I have an updated NIS 2012 on my machine  (version 19.5.0.145).