Proofreading macro

I am looking for help to write a macro that will proofread a series of large
documents for me.

A text file will be used for all suggested replacements. For example:

phone=telephone
fax=facsimile
&=and
24 x 7=24x7
7 x 24=24x7
mgmt=management

The macro will read the text file and find and replace as appropriate.
Track changes must be switched on at the start and switched off at the end
of the routine.

The reason for using a text file is for simplicity and easy maintenance
without knowledge of VBA code. Thanks in anticipation.