procExecuting = Process.Start(TPC.exe)
After that you could write a general method that you could use for different .exe files that you want to use. It would be like below.
Sample code :
Dim appPath As String = Application.StartupPath()
Dim procStartInfo As New ProcessStartInfo
Dim procExecuting As New Process
.UseShellExecute = True
.WorkingDirectory = appPath & "\"
.FileName = "TPC.exe"
.WindowStyle = ProcessWindowStyle.Normal
.Verb = "runas"
procExecuting = Process.Start(procStartInfo)