I did just that. Upgraded the driver and it's crunching away. The problem is that it says I have a AMD ATI Radeon HD 2300/2400/3200 (RV610) (368MB) driver: 1.4.1457. Windows says I have an HD 4200. I'm only using 3 cpu cores to free up one for the gpu. Looks like it may have reduced the crunching times. I still can not get Collatz to crunch. I'll play with it some more tomorrow.