I have to assume that you're asking about locking the first row in Excel, because the titles in LANSweeper reports are already locked at the top.
Suggestion: make yourself a global macro that jumps to A2 and then freezes the row above, then create yourself a quick-access toolbar button that runs the macro.
If you want to record the macro: F5, A2, Enter, Alt+W, F, F. The result should look like this:
Sub freeze_top_row()
Application.Goto Reference:="R2C1"
ActiveWindow.FreezePanes = True
End Sub
You'll still have to remember to invoke it, but it'll be just a click away.