Hi there,
I understand you're looking for drivers for your PSC 1210 on Windows 7. I will certainly do my best to guide you in this issue.
At this time there are no HP drivers available for this printer for Windows 7. You can still use the printer with Windows 7, you will just have to use the drivers available within Windows 7. That document will walk you through what you need to do in order to get printing again, and will also show you how to scan with this Windows driver.
Hope this helps, have a great day!!