POWER OF ATTORNEY
                                -----------------



     The  undersigned  Robert  M.  Krasne  hereby  designates,  constitutes  and
appoints each of William B. Danzell,  Nigel P. Hebborn and Benjamin M. Alexander
singly,  my true and lawful  attorney and authorizes each of them singly to sign
for  me and  in my  name  any  Initial  Statement  of  Beneficial  Ownership  of
Securities on Form 3, Statement of Changes in Beneficial Ownership on Form 4, or
Annual  Statement of Changes in  Beneficial  Ownership on Form 5, such power and
authority to remain in force until December 31, 2006.

     IN  WITNESS  WHEREOF,  the  undersigned  has duly  executed  this  Power of
Attorney as a sealed instrument this 17th day of December 2003.



                                    /s/ Robert M. Krasne
                                    -------------------------------------------
                                    Robert M. Krasne