I figured out how to get it to work, I still have other issues but I'm working on them.
{code}
Dim dsi As DatabaseSummaryInfo = ApplicationServices.Application.DocumentManager.MdiActiveDocument.Database.SummaryInfo
Dim dsib As New DatabaseSummaryInfoBuilder(dsi)
dsib.Title = txtTitle.Text
dsib.Subject = txtSubject.Text
dsib.Author = txtAuthor.Text
dsib.Keywords = txtKeyword.Text
dsib.Comments = txtComments.Text
dsib.RevisionNumber = nudRevision.Value
dsi = dsib.ToDatabaseSummaryInfo
{code}