RedCOMET,
I'm sorry but I don't know.
I installed MS Outlook from one .exe file, then after that installed Business Contact Manager from a separate .exe file.
Both came with my Office 2007 Professional version. I suspect, but don't know, that the 2nd .exe file doesn't come with the home version. Maybe it's only included in the Professional version.
I also don't know if you can buy it separately or maybe even get it as a free download from Microsoft. Probably not free, but you could at least check MS' web site.
In any event, in my case it's too unreliable for use in business because it keeps disabling itself.
The problem seems to relate to file compression. I've wondered if Windows Disk Cleanup tool (in Windows XP Pro) might cause it. Not sure. Or maybe I'm the cause, by doing something wrong.
Disk Cleanup has a checkbox to "Compress Old Files" which I think is probably "on" by default, and maybe that compresses the various files Outlook Business Contact Manager needs. A few times in the past 2 years I've had to manually go through and decompress a lot of individual files to regain access to my vital business contact info. I've cleared that Disk Cleanup checkbox and also the "Compress drive to save disk space" boxes in Windows Properties for all my drives.
Again, at least for me, Outlook Business Contact Manager is just too unreliable for use in my business because of this recurring problem.