how to cover spawned process from commandline Follow

I am trying to use the commandline to measure coverage for a client-server setup. I would like to have coverage data for both server and test-client. The command line will be executed from a Jenkins build-server.

It does not look like the command tool supports this setup? I can find some documentation for how to do this manually using the GUI from inside VS but not for the command line.
I have tried to use nant as a target and let it spawn processes, but it does not pick up coverage data for the server. This is only partly true, because it picks up coverage data from the server when it is run as a normal non-spawned process.

Is it possible fom the command line to get coverage data from a spawned process at all?

The dotcover configuration file is

<TargetExecutable>tools\nant-0.92\bin\nant.exe</TargetExecutable>
  <TargetArguments>test.functional.mssql</TargetArguments>
  <TargetWorkingDir>.</TargetWorkingDir>
  <Output>dotCover\dotCoverReport.html</Output>
  <ReportType>HTML</ReportType>

And the nant target looks (simplified) like this

<target name="test.functional.mssql">


<exec program="server\bin\${platform.target}\${configuration}\my.server.exe"> <-- this is in-process and dotcover picks up coverage data.
  <arg value="-install" /> <-- this makes the sever stop after the installation
</exec>


<exec program ='server\bin\${platform.target}\${configuration}\my.server.exe' spawn='true' pidproperty='ckms.pid' /> <--this spawns the server, which runs until killed


<exec program="tools\NUnit-2.5.10\bin\net-2.0\nunit-console-${platform.target}.exe">
    <arg value="test\FunctionalTests\bin\${platform.target}\${configuration}\FunctionalTests.dll"/> <-- dotcover picks up coverage for this and the client assemblies that are loaded by the test
</exec>


<kill pid="${ckms.pid}"/> <--stops the server

Cheers
Jeppe