thanks Mattclarified for your comment I tried what you suggested but was getting an error that I didn't have permission to change the name of that file.(I ran as admin, and was admin at the time.) I was able to change it on the XP computer I was doing the same thing with but it ended giving me the same error. I found an outlook 2007 disc and was able to use that instead of 2010. I guess that's my work around for the time being, thanks very much for your help!