@McTag,
I'm can't disclose too much information for business reasons, but let me help clarify a bit more, for both you and Setanta.
First off, I MUST use the phrase as stated, except for the forms I've asked about, whether it sounds right or not. It doesn't help me if people try to reword it more than asked, as much as we all REALLY want to. ; )
Secondly, we are to think about people, for example, who are at home... our family, children, etc. So it's not whom we're safe WITH, but.. for! I can't help the way it's worded, please understand. I just am asking what form of it would work best in a casual bulletin board situation: Who, Whom, or For Whom.