for your ref. , copy from samsung web:
Vista Drivers for Older Samsung Monitors
Vista drivers are not available for many older Samsung monitors. If you like, you can use the XP drivers that came with your monitor (See below).
XP drivers for older and some current Samsung models are not Vista certified, and when you install them, you may see a warning to that effect. However, the lack of certification will not affect the operation of the driver or the monitor. If you see a message warning that the XP driver is not Vista certified, click the Ignore button and continue to install the driver.
Graphic Cards
Graphic cards from Intel, ATI, and Nvidia which currently support wide screen resolutions (1440x900 and 1680x1050) will continue to support wide screen resolutions in Vista. Graphic cards from other manufacturers may not. In either case update your video card drivers before installing your new monitor.
