Old Version Reinstalled...Need Validation Code

I reinstalled my old version (QB PRO 2005) on a new computer and I ran out of 'unregistered' user times to access.  I had no idea I needed to do this or it would shut me out because I tried several times to do it and it kept saying I need a validation code.  I continued using it as 'register later'. I can no longer get in there.  I have no problem upgrading, but I need my 'old' data.   I have my Product Information and Source Code, but I need a validation code.  I know it is an old version, but I am hoping there is a solution.  Help!