This should get you started
SELECT TOP 100 PERCENT dbo.tblComputers.Computername, dbo.tblComputers.Domain, dbo.tblDesktopMonitor.ScreenHeight,
dbo.tblDesktopMonitor.ScreenWidth
FROM dbo.tblComputers INNER JOIN
dbo.tblDesktopMonitor ON dbo.tblComputers.Computername = dbo.tblDesktopMonitor.Computername
ORDER BY dbo.tblComputers.Computername