You'll want to look at using an enum property. I'm totally offline and have no
SharePoint access right now. If that doesn't get you going, post again.

I know to use the enum property, but am
basically clueless as how to acutally implement it. Do I create a new
class? Any tips or guidance would be most helpful.

Here is the code  I have so far. It gives me the "Windows SharePoint
Services cannot deserialize the web  Part" error. What else do I need
to add  to my project file for this to create a dropdown list  in the
properties pane?



Private colorPicked As MyColors

Public Enum MyColors
Red = 0
Blue = 1
Green = 2
End Enum

<Browsable(True), Category("Select Color"), DefaultValue(""), _
WebPartStorage(Storage.Shared), FriendlyName("Color"), _
Description("")> _
Property BorderStyle() As MyColors
Get
Return colorPicked
End Get
Set(ByVal Value As MyColors)
colorPicked = Value
End Set
End Property

Check out the following link. Hopefully you can find answers for your question.

http://www.15seconds.com/issue/040219.htm