Hey, Jenny!
I don't know offhand whether this plugin is indeed actively maintained. I do know that it really does do what it portends; I spend a considerably (alright, an embarrassingly) long amount of time trying to just get my re-writes in place, when I finally threw in the towel and got this plugin.
Now, when a user selects the login menu option, we immediately switch to SSL (and stay there after login), and hitting the contact form menu item likewise encrypts.
This is one of those plugins that - as long as it continues to work with newer versions of WP - I'll probably have around for a long time.
Give it a shot. I'll peruse the support threads when I get a moment; perhaps there are a couple of poor souls I may be able to assist there. ;-)
Cheers
Lewis