C#Net2008 Within FORM navigate from TEXTBOX to TEXTBOX using TAB and ENTER key

Question

 Hi CSharp Good Guys,
Need your help. Please help me.  I am using C#Net2008 for Window application.
On the FORM there are 14 TextBox Controls. The Users are requesting that after data input in a textbox, they press ENTER key they expect the cursor to move to the next TextBox whose TabIndex is just 1 greater than the current one. So far, the TAB key does work but ENTER key is not.
Please share your suggestion with me and if possible share with me a sample coding. I rather learn and understand coding logic.
Thank You.