[PowerShell] Filling in a users Com+ Partition Set programatically?

Hello lads n lasses,

I'm messing around with PowerShell to simply create and setup a new User object in AD, however i've run into a snag, i can't set the Com+ Partition Set...
This is what i mean:
http://i.imgur.com/VVHwnp2.png

Any ideas? We've several to pick and choose from depending on the applications / settings required.

Best Regards,
TG1.