Hi all

Old thread but I wanted to share this. Hyperlink font can be set. Add another line after the hyperlink code.
Result should be -
 Code:
$objLink = $objSelection.Hyperlinks.Add($objSelection.Range,"http://www.google.nl",,"Google Home Page", "Google Link")
$objLink.Range.Font.Size = "8"

Taken from this link -
http://social.technet.microsoft.com/Forums/en-IN/ITCG/thread/9109b370-eb13-4a64-bf3b-1b91ccfa49ce