Removing Test Orders in Marketplace

I am "going live" on my site and would like to remove the old test orders I created. I see several old discussions on here about doing that, and that it was on the "to do" list. I was just wondering if there is there any movement on that issue.

I also note the command line method that is referenced in the prior discussions. My problem is...I've got no clue where to even access that command line (I missed that day in law school - heh).

Thanks.