At least TunnelBuilder can be found at the garden: http://macintoshgarden.org/apps/nts-tunnelbuilder
I was worried about the status of it being an eval version. While it does work, sadly, as far as I can tell via experimentation, mppe encryption requires mschapv2 which this client does not seem to support. So the options are no encryption, or a windows pptp server. I opted for windows 2003, as it was the easiest for me to get working properly. I did try nt 4.0 and 2k, but couldn't get them to route the traffic. They kept dumping it directly to the switch. Lame.
The other problem with it being an eval version is that it is limited to 40 bit encryption, I assume because of export laws at the time.
Maybe some one has a full version some where
Anyways, it appears that after the evaluation is up (which the eval mode seemingly needs a manual connection and nags you with a popup), you can delete everything and re-install.
If some one has more experience with pptp than I, which shouldn't be hard to find, I'd be willing to listen to advice on how to get a linux server to run with mppe encryption and mschap. I tried red hat linux 5,6,7,9 and debian jessie on a pie. All with the same results.
Be warned, connecting with bad configs seems to cause a memory fault on the mac and needs a reboot to recover.