NOTE: Currently PPTP VPN is not working on Android OS 2.1, 2.2, and 2.3.

You can setup a VPN connection on the Droid as long as you don't check PPTP. Apparently this won't be fixed soon.

http://code.google.com/p/android/issues/list?can2&qpptp&colspecID+Type+Status+Owner+Summary+Stars&cellstiles

http://androidforums.com/evo-4g-support-troubleshooting/140775-post-froyo-vpn-issues.html

http://www.droidforums.net/forum/tech-issues-bug-reports-suggestions/3722-droid-vpn-pptp-connection-not-working-when-encryption-turned.html#post776063

http://community.vzw.com/t5/DROID-X-by-Motorola/Unable-to-connect-VPN-pptp-or-ipsec/td-p/226048/highlight/false/page/3

– Main.FredPettis - 2010-09-02