Linking To SQL Server To Access 97

OK here is my situation: I work in a laboratory with a 10 year old instrument that stores results in an Access 97 DB. The DB is beautifully designed and implemented. The problem is that since the software is so old, once the DB gets above a few MB in size the application starts to fail. So their solution is to Backup (make a copy) and Cleanup (delete data older than X days) once a week. So what I end up with is a bunch of copies of the DB, which fragments the data that I need. In order to get the data results I have been using an Access 2003 DB linked to this one (because I can't create Views in that database). The lab users then use the linked DB directly or I have written some automation code in Excel VBA (ADO) to simplify it for the other users. This allows us to query data immediately as it is produced.

My hope is that I can somehow get all of the data into a SQL Server DB. Now I have imported one of the backup copies of the DB in and the table structure and data imports fine into SQL Server, but I end up with duplicate rows because the different DB backup files have overlapping data, and for some reason there aren't PKeys. Also, I'd prefer to have some way of automating the input. Something like a trigger on the Access table so that any new data is imported into the SQL DB automatically. I doubt this is possible, but that is generally what I am trying to do and I am out of ideas. The ultimate goal is that the SQL DB will always be "updated" and I can use that as my query source and take advantage of the power of SQL Server.

Hopefully that all made sense... if anyone has any ideas I would love to hear them.

Thanks for your time.