Oddly, these books are mentioned on the Baen Books Webscriptions site, but listed as "not currently available". But if, like my dad, you have a free disability subscription to the site, they are both downloadable in several non-DRM formats.
Fans of Vinge may like to know, if they don't know already, that his latest novel, "Rainbows End", is available for free here
http://vrinimi.org/rainbowsend.html in html format. Haven't read it yet, so I can't comment.