First, you should not edit the mojoProfile.config file nor should you edit the ProfileResources.resx file because if you do these files will be replaced during upgrade and you will lose your customizations.
You should copy the mojoProfile.config and name it something else like customprofile.config, then you can set this setting in user.config to point to your custom file instead of the included file:
<add key="mojoProfileConfigFileName" value="customprofile.config" />
If you want to localize the labels you can create your own customwhatever.resx file and refer to it in the settings or if you don't care about localizing then just enter the text there and I think it should just show the text if it can't find it as a key in a resource file.
Note also this thread may be of interest.
Hope it helps,