Please be careful with that utility (MJB Keyfinder).
I'm sorry. I haven't used that utility (MJB Keyfinder) in a long time. I just went to the site and saw that version 1.5 beta 3 is supposed to work with Office XP and Office 2003. I know for a fact that an earlier beta did because I used it to help a friend get out of a pickle. I also communicated by e-mail with the author of the program about getting that earlier version to delineate between different Office products. (Friend was running Office Pro and Visio Pro, and we were being presented with two Office keys without any indication as to which key went with which product.)
I decided to test the beta 3 version. I downloaded it. When I unzipped the archive I received a notice from NOD32, my AV software, that there was a threat present. NOD32 labeled the threat as "Win32/PSWTool.RAS.A application". I downloaded version 1.41, the last official version of the utility, and it showed the same threat.
I have no idea whether or not this is a false positive. I suspect that it is, or that the utility makes use of a tool which is also used in some sort of malware out there. I do have aggressive heuristics turned on in NOD32 because this is a remote admin notebook I'm typing on.
I believe that the fellow who authored the utility is trustworthy. Of course it is always possible that the archives on the download servers could have been compromised without his knowledge, but I think not. I'll check with the NOD32 forum to see if anyone has reported this behavior with Keyfinder and, if so, whether or not it has been confirmed to conain malware.
This may be much ado about nothing. I have also seen this utility recommended more than once by others (here and at Ars Technica, I believe). If it has a problem I would think we would have heard by now.
I'll get back here if/when I get any further information about this. I'm sorry if this causes you any inconvenience.