Open Default mail client in .NET

I was writing an emailing application in VB.NET when I came across a situation where I needed to load the default email client of the user's machine with all the email fields filled up.  I was not able to find a suitable solution for this on the Internet hence I thought why not write one.  It is easy to understand.  For comments please mail me at Melroy_Britto@Hotmail.com

Building The Message

public class OpenDefaultClient
Function openclient()
'string builder used for concatination
Dim MsgBuilder As New System.Text.StringBuilder
MsgBuilder.Append("mailto:melroy@testmail.com")
MsgBuilder.Append("&cc=testcc@testcc.com,testcc1@testcc.com")
MsgBuilder.Append("&bcc=testcc@testbcc.com,testcc1@testbcc.com")
MsgBuilder.Append("&subject=this is test subject")
MsgBuilder.Append("&body=this is test body")
MsgBuilder.Append("&Attach="c:\mailattach.txt")
'Debug.WriteLine(MsgBuilder.ToString)
ExecuteFile(MsgBuilder.ToString)
End Function 

Starting The Default Email Client

Private Function ExecuteFile(ByVal FileName As String) As Boolean
Dim myProcess As New Process
myProcess.StartInfo.FileName = FileName
myProcess.StartInfo.UseShellExecute = True
myProcess.StartInfo.RedirectStandardOutput = False
myProcess.Start()
myProcess.Dispose()
End Function
End