Multiple monitor support is native to Windows 2000 and higher. All you have to do is:
1) Right click anywhere on the Windows desktop.
2) Select the "Settings" tab from the resulting context sensitive tab.
3) Enable/configure the monitors any way that you want.
Finally, despite our Austrian friend's rudeness, this really is the wrong forum. For Windows questions I would refer you over to "www.myitforum.com" or the Windows .Net forum at http://www.winntmag.com/Forums/.
I hope that this helps.