Cannot recall how I installed the driver. Possibly Windows 7 found it on its own?
The driver the OS shows installed when the scanner is in the USB port is:
Manuf: Hewlett Packard
The scanner is used on multiple Windows 7 machines, both 32 and 64 bit, and appears to have the same driver installed. No other "support" software is there. Do not have the original disks anymore as I always check the website for the latest drivers anyway.
Appears that if I installed the driver myself, may have just grabbed the "Basic Feature Driver", posted 5 Mar 2007, labeled v1.1, and is the same for XP and Vista 64 bit -- on the HP 4670 support site. Have always been reluctant to load HP "packages" due to all the bloat that often does not work properly (have several all-in-ones).
Should add that this scanner works great under Windows 7. Love this scanner. Not only for its portability but ability to do large objects and books. The higher optical resolution support in the driver beats most other scanners I have used. Sometimes I have to scan maps that have 2 to 3 point type. The 4670 works great to pick this up whereas other claimed optical 2400 dpi come out with a muddled image.