How to let window service to open a webpage

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C#

C#4.0

Windows-service

I want to use a window service to open a webpage or run an exe file,can someone tell me how to do this.(window 7,vs2010)

my code is like this:

public partial class Service1 : ServiceBase
    {
        public Service1()
        {
            InitializeComponent();

            System.Timers.Timer t = new System.Timers.Timer();
            t.Interval = 1000;
            t.Elapsed += new System.Timers.ElapsedEventHandler(RunWork);
            t.AutoReset = true;
            t.Enabled = true;
        }

        protected override void OnStart(string[] args)
        {
        }
        public void RunWork(object source, System.Timers.ElapsedEventArgs e)
        {


                File.Open(@"E:\1.txt", FileMode.Open);
                File.Open(@"E:\2.txt", FileMode.OpenOrCreate);

                System.Diagnostics.Process.Start("http://www.baidu.com");
                 //It doesn't run


}
}