Include in this section the function prototypes needed. You can copy and paste the prototypes in the examples.
Private Declare Function vensim_be_quiet Lib "vendll32.dll" (ByVal quietflag As Long) As Long
Private Declare Function vensim_check_status Lib "vendll32.dll" () As Long
Private Declare Function vensim_command Lib "vendlm32.dll" (ByVal Vcommand$) As Long
.........
Note that if you do not use one of the functions it does not matter. Thus the easiest thing is just to copy all the prototypes for use in your code.
Dim tval(500) As Single
Dim tval2(500) As Single
Dim rval(500) As Single
Dim rval2(500) As Single
Dim tpoints1 As Integer
Dim tpoints2 As Integer
Some globals are used to store results.