you say you have nero 5.5 but 5.5 what , there are 2 more numbers after the 5.5 have you tried the update from the downloads section at ahead which updates you current one to 55.10.56, note this is a update not a upgrade which usually adds support for more and newer drives i would imagine if this does not fix your problem then you may have to go for the nero 6 or find an alternative
http://www.nero.com/en/nero-up_vor.php nero downloads page for the update