matchIT is telling me that I need to ensure that it has write access on the matchIT directory; how do I do this?

2.  Click Edit to change permissions.  Add read/write access on the matchIT directory (e.g. C:\Program Files\matchITv52 by default) to the user account that will be running matchIT suite.

If you do not have access to change these settings, then you will need to consult your Systems Administrator.