Turning off parallel builds in VS2005?

Hi All,

We build a lot of our solutions unattended, from the command line. When
parallel builds are enabled, the project build console output is all mixed
up - making it almost readible when a project has build errors.

Is there any way to turn off parallel builds via command line? Then switch
it back when the build is done? Or is there any way I can keep the parallel
builds, but reformat the output similar to switching the IDE output window
to 'Build Order'?

Thanks in advance!
Corey Wirun