DBD::Sybase compatibility

Hi,
 
I am wondering how I maintain the DBD::Sybase module if I already have a
stable working copy of DBD::Sybase.  I currently use this on the Solaris
platform to successfully connect to Sybase.
 
It is my understanding from reading the docs, that I need to recompile the
DBD::Sybase using the Freetds libraries.  
So,  how can I maintain 2 DBD::Sybase modules?  An assumption that should be
made is that I would never  need to access an SQL Server and Sybase at the
same time.
 
thanks again in advance.
 
Ian