Activity Pages
Intellisense
It's quite annoyingly difficult to work without intellisense, but unfortunately this is part of Visual Studio 2010. However, if you do have VS2010, you can use the following procedure to be able to use VS to edit the workflow XAML :
  1. Copy 'Active.Activities.dll' to the following folder : '${ProgramFiles}\Microsoft Visual Studio 10.0\Common7\IDE\PrivateAssemblies'
  2. If you use scheduled tasks, you also need to copy 'Microsoft.Win32.TaskScheduler.dll' to the above folder. Many thanks to the creators of this library. (http://taskscheduler.codeplex.com)

That's it. If you open the XAML file in VS2010, you now have intellisense support (but not the "Run" command as in the builder).

Active.Run command line params
Some Notes on Activities

To Get Current Executing Directory : AppDomain.CurrentDomain.BaseDirectory will return e.g. "C:\Temp\"

InvokeProcess
This is the most versatile of the activities. You can run any executible or do anything that's possible from the command line.

SetServiceStartupMode
This activity allows you to set the startup mode of services. Note that you'll need to start Active.Run with administrative privileges for this to work on most services.

CreateSimpleScheduledTask
This activity allows you to create a scheduled task in the windows task scheduler. It is intentionally simplified as scheduled tasks can be setup in very complex ways.

CreateUser
This allows you to create a user account either locally or on the domain. Obviously, the account running the current process must have the rights to do this. All properties on this activity is rather straight forward.

MSBuild
This is not really a deployment activity, but an experiment to see how difficult it would be create an automated build system without TFS licenses. As the name states, it allows you to call msbuild on a project file (currently it doesn't support .sln solution files).

You can easily create a simple build/deploy using Active and just create a scheduled task to do nightly builds. Should have a few more build tasks available soon like mstest/tfs get etc.