recovering old .sav files



Hallo.
I used maxima with wxMaxima sometime in 2006 and saved quite a bit of 
work in files with extension sav.
Now I changed my computer and upgraded to the current version of maxima, 
and I cannot find a way of opening my old files.

I tried with load, but I get the error message:
 > Load failed for C://Documents and Settings//alberto//My 
Documents//maxima//Newton.sav -- an error. To debug this try 
debugmode(true);

Can I still open the old .sav files for maybe saving them in the new 
(for me) format wxm?

Thanks in advance for your help,
Alberto
-- 
Alberto Marcone                       alberto.marcone at dimi.uniud.it
Dip. di Matematica e Informatica
Universita' di Udine                  tel: +39-0432-558482
via delle Scienze 206                 fax: +39-0432-558499
33100 Udine
Italy                                 http://www.dimi.uniud.it/marcone/