How can I control the properties of a Built-in-Dialog box in word

[EEvans]

I would like to know how to control the properties of a Built-in-Dialog box.
I have created a macro for Bookmarks. I now want to use the
wdDialogEditLinks dialog box to allow users to select a Bookmark from the
list. I don't want the "Delete" botton to be active, I want it "Greyed" out.
I have tried to used sample code from "Displaying Built-in Word Dialog
Boxes" in the help menu. Sample code used:
With Dialogs(wdDialogInsertBookmark)
.HiddenBookmarks = 1
.Execute
End With
What are the variables/properties that I need to use to:
1. Grey the Delete button?
2. Check the Hidden Bookmarks check box?

Thanks

 

[EEvans]

How can I make the Delete Command button Disabled? I don't want the user to
be able to delete a Bookmark by accident.