Process p = new Process();
p.StartInfo.FileName = @"C:\Program Files\Internet Explorer\IEXPLORE.EXE";
p.Start();

class CeProcess
{
public class ProcessInfo
{
public IntPtr hProcess;
public IntPtr hThread;
public Int32 ProcessId;
public Int32 ThreadId;
}

[DllImport("CoreDll.DLL", SetLastError=true)]
private extern static
int CreateProcess( String imageName,
String cmdLine,
IntPtr lpProcessAttributes,
IntPtr lpThreadAttributes,
Int32 boolInheritHandles,
Int32 dwCreationFlags,
IntPtr lpEnvironment,
IntPtr lpszCurrentDir,
byte [] si,
ProcessInfo pi );

[DllImport("CoreDll.dll")]
private extern static
Int32 GetLastError();

public static bool CreateProcess( String ExeName, String
CmdLine, ProcessInfo pi )
{
if ( pi == null )
pi = new ProcessInfo();

byte [] si = new byte[128];

return CreateProcess(ExeName, CmdLine, IntPtr.Zero,
IntPtr.Zero,
0, 0, IntPtr.Zero, IntPtr.Zero, si, pi) != 0;
}
}

CeProcess.CreateProcess("iexplore.exe","http://www.google.com",null);