(3) Открой для себя VBA-help уже )))
Excel 2010 Developer Reference > Excel Object Model Reference > Enumerations
Excel Developer Reference
XlLineStyle Enumeration
Specifies the line style for the border.
Name Value Description
xlContinuous 1 Continuous line.
xlDash -4115 Dashed line.
xlDashDot 4 Alternating dashes and dots.
xlDashDotDot 5 Dash followed by two dots.
xlDot -4118 Dotted line.
xlDouble -4119 Double line.
xlLineStyleNone -4142 No line.
xlSlantDashDot 13 Slanted dashes.