License in XP

I think you just need the license codes.  As ISH notes, I'm not convinced that this old version of Chemstation will run on Windows 7, either.  Best to ask an Agilent representative to get a definitive answer.

I think you are talking about Chemstation software, NOT OpenLab CDS Chemstation Edition software !

In Chemstation software you just only need the licence numbers written on a piece of paper and then add it to a newer version of Chemstation software via program>chemstation>add instrument but for assurance please firstly install chemstation on a new PC and add the license numbers to it. After succeed you can leave old PC win XP

For OpenLab CDS Chemstation Edition (Which I think you do not have it!) you would need registration in https://agilent.subscribenet.com/ . But this is not your case because you only have Chemstation software revision A.10.02 , 2004.

Regarding change the old PC Win XP with new PC Win 7, fortunately I find an old print screen from Agilent web site include a table of Compatibility of Chemstation software with Windows Operating System. (Please find the PDF file attached).

As an answer to your question: According to the attached table, you will be able to install chemstation Rev. B.04.03 (November, 2010) which support for Windows 7 (32 bit). For older version of chemstation, I am not sure supporting Win 7.