Remote desktop - "teamviewer" has worked well for me for off site work.
Have it installed on my clinic workstation (not on server)
and have a client installed on my laptop.
AC stays on the server and runs on the clinic workstation.
My laptop accesses the workstation and I am in business for free, with three layers of passwords !
Here is the link -
http://www.teamviewer.com/en/index.aspx(This has worked much better for me than
Logmein and / or Google-Chrome remote desktop (also a free add on to the chrome)