Voila!
Code:
    <DllImport("user32", EntryPoint:="GetCaretBlinkTime", SetLastError:=True, CharSet:=CharSet.Auto)> _
    Private Shared Function GetCaretBlinkTime() As Int32
    End Function
EDIT: Thanx for the reply jmcilhinney, didn't see it upfront. What you said made perfect sense. Thank you!