Application.EnableVisualStyles()

Dear All,
I have developed an application in windows2000 where i include
Application.EnableVisualStyles();
in C#.But the icons on the buttons of the toolbar doesnt appear in WindowsXP when this line is included.But it works in other OS such as WindowsServer2003
When that line (Application.EnableVisualStyles()) is commented icons are appearing in WindowsXP

Any help is appreciated
Thanks