Yeah, just noticed the 1650 series pci/agp has been relegated to the 'legacy' driver section. CCC version 10.2 is the latest available. No reason why that driver would not work. Otherwise use the driver from the CD that came with the card. That driver was used to test the card before it shipped.
The card was released well before Windows 7. In most instances, Vista drivers work with Windows 7. I suppose it is possible the version 10.2 Vista driver the ATI site directs you to when prompting for a Windows 7 32 driver is not compatible with Windows 7. I doubt this is the case though.