It is not complicated to connect a dual monitor on a computer, first you need to prepare two monitors and install dual graphics (two PCI graphics cards, or PCI/AGP graphics each) or use a dual-head display, such as the ATI Radeon series display card support "Hydraview dual-screen display", or support dual graphics card in parallel, after the hardware is ready to install dual monitors, you should also pay attention to the following issues:
If it is possible to set the display parameters reasonably, the second monitor is best set to the same resolution as the primary monitor, which looks more comfortable. Because using different resolutions on different monitors may seem like a habit. Of course this is not absolute, sometimes you need to set the parameters of the two monitor to different.
Attention to interference when two monitors are placed too close, there may be interference, usually on the monitor will appear a horizontal or downward displacement of the line or rolling ripple. At this point should adjust the display position of two monitors, and the refresh frequency of both to set the same as possible. If you still can't, consider placing a metal shield between the two monitors.
Hardware acceleration limits the need for more than Win2000 system support when using dual-monitor systems. For Direct3d/directdraw, full screen applications (such as games) can have hardware acceleration on all monitors when using dual monitors. Applications in windowed mode, such as most 3D design programs, can only get hardware acceleration on the primary display.
Other problems most screen savers can only run on the main monitor, support the screen saver of Dual monitor system, need to find another. In addition, there may be some minor problems when running certain programs, such as displaying some messy dialog windows on the main display. However, most programs can run smoothly on a dual monitor. (GSF)