Perhaps you will get some ideas from this (long) thread...
http://www.retouchpro.com/forums/ima...ses-glare.html
The technique boils down to repairing "bad" (glare) sections by replacing them with nearby "non-glare" sections, or reversed pieces from the other lens. Depending on the nature of the image this can range from not-so-difficult to very, very difficult.
If you're lucky and have two different poses shot more or less straight on, one can get replacement sections from one image to repair the other.
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See link below my sig. for "how to upload" info.
Hope this gets you started. Welcome to RetouchPRO.