this program currently runs when the user is working
anywhere on the spreadsheet, but i only want the program
to run if the user enters something in range g251.
suggestions?

Private Sub Worksheet_SelectionChange(ByVal Target As
Range)
If Len(Range("h251")) 10 Then
Range("g251:h251").Borders(xlEdgeLeft).Weight = xlMedium:
Range("g251:h251").Borders(xlEdgeTop).Weight = xlMedium:
Range("g251:h251").Borders(xlEdgeBottom).Weight =
xlMedium: Range("g251").Interior.ColorIndex = 6
Else
Range("g251").Interior.ColorIndex = 0: Range
("g251").Borders(xlEdgeLeft).LineStyle = xlNone: Range
("g251").Borders(xlEdgeTop).LineStyle = xlNone: Range
("g251").Borders(xlEdgeBottom).LineStyle = xlNone
End If
End Sub