[RESOLVED] Easy Conversions? (e.g. Millimeters to Inches)

[winallsys]

Hi, I'm just wondering (this is SO noobish of me) if there is an easy way to convert units. Up until now, I have inserted a combobox, and, depending on what's in it, converted something in a textbox (numeric value). For example:

Sub ConvertButton_Click(blah blah blah blah) Handles ConvertButton_Click 
 Dim conversionanswer As Double
  If combobox1.Text = "Feet to inches" Then
      conversionanswer = textbox1.text * 12
  ElseIf combobox1.Text = "Millimeters to inches" Then
      conversionanswer = textbox1.text * 0.4
  EndIf
  label1.Text = conversionanswer
End Sub

Something akin to that (I know, sloppy code that probably doesn't work .) I'm looking for something like two comboxboxes each with a unit and a textbox for number of units with a "Convert!" button. Can anyone help? Thanks!

(EDIT: Is this the right section? My app is for Windows Mobile, but this is conceptual VB...)