If you have a Scanjet 7400C, as I do, the only options HP offers are 1) use the older (v8.0.0.0 dated 12/27/2006) driver or 2) buy their new scanner. With option 1 you will NOT be able to scan slides or negatives, as you could do with older operating systems,
but you can scan pictures, etc. One writer suggested using VueScan (http://www.hamrick.com/) with this scanner. I have not tried this. It's about $40 for the Standard version, $80 for the Professional. Their page reports that this software scans film and,
presumably, slides too. I hesitate to spend $80 for software on the chance that I can scan slides/negatives when I can buy a new scanner for not a great deal more.