Buffalo NAS - can't access network shares

Hi - just installed CIS 4 on my XPSP3 machine & now I can no longer access my Buffalo NAS network shares, e.g., used to navigate to '\Ls-chlaa7\share' but now can only get at it through “\[IP address]\share” – that will force me to rebuild all of my shared media libraries in iTunes, MediaMonkey, WMP, etc. - what do I have to do to make CIS recognize Buffalo’s standard shares again?