Good luck on this. If all fails maybe try contacting SONY directly.
http://esupport.sony.com/US/p/index.pl
I'm sure it will cost an arm and a leg but...
I'm also thinking I had a VAIO laptop my mom has still I think, It's broken I believe, I'll call her later and see if she still has the cord. It might be compatible. Probably not but its worth a try.